Use Python 3 super() argument-less syntax

The form is less verbose and more idiomatic for Python 3 only code.

https://docs.python.org/3/library/functions.html#super

56 files changed, 185 insertions, 190 deletions

diff --git a/sphinx/addnodes.py b/sphinx/addnodes.py
index 7c8f2c9d0..f9e5bdea4 100644
--- a/sphinx/addnodes.py
+++ b/sphinx/addnodes.py
@@ -128,7 +128,7 @@ class desc_returns(desc_type):
     """Node for a "returns" annotation (a la -> in Python)."""
     def astext(self):
         # type: () -> str
-        return ' -> ' + super(desc_returns, self).astext()
+        return ' -> ' + super().astext()
 
 
 class desc_name(nodes.Part, nodes.Inline, nodes.FixedTextElement):
@@ -150,7 +150,7 @@ class desc_optional(nodes.Part, nodes.Inline, nodes.FixedTextElement):
 
     def astext(self):
         # type: () -> str
-        return '[' + super(desc_optional, self).astext() + ']'
+        return '[' + super().astext() + ']'
 
 
 class desc_annotation(nodes.Part, nodes.Inline, nodes.FixedTextElement):
@@ -210,7 +210,7 @@ class math(nodes.math):
                           RemovedInSphinx30Warning, stacklevel=2)
             return self.astext()
         else:
-            return super(math, self).__getitem__(key)
+            return super().__getitem__(key)
 
 
 class math_block(nodes.math_block):
@@ -229,7 +229,7 @@ class math_block(nodes.math_block):
                           RemovedInSphinx30Warning, stacklevel=2)
             return self.astext()
         else:
-            return super(math_block, self).__getitem__(key)
+            return super().__getitem__(key)
 
 
 class displaymath(math_block):
@@ -354,7 +354,7 @@ class abbreviation(nodes.abbreviation):
         warnings.warn("abbrevition node for Sphinx was replaced by docutils'.",
                       RemovedInSphinx40Warning, stacklevel=2)
 
-        super(abbreviation, self).__init__(rawsource, text, *children, **attributes)
+        super().__init__(rawsource, text, *children, **attributes)
 
 
 class manpage(nodes.Inline, nodes.FixedTextElement):
diff --git a/sphinx/builders/_epub_base.py b/sphinx/builders/_epub_base.py
index 4e1794179..7c0b03600 100644
--- a/sphinx/builders/_epub_base.py
+++ b/sphinx/builders/_epub_base.py
@@ -151,7 +151,7 @@ class EpubBuilder(StandaloneHTMLBuilder):
 
     def init(self):
         # type: () -> None
-        super(EpubBuilder, self).init()
+        super().init()
         # the output files for epub must be .html only
         self.out_suffix = '.xhtml'
         self.link_suffix = '.xhtml'
@@ -373,7 +373,7 @@ class EpubBuilder(StandaloneHTMLBuilder):
         """
         self.fix_ids(doctree)
         self.add_visible_links(doctree, self.config.epub_show_urls)
-        super(EpubBuilder, self).write_doc(docname, doctree)
+        super().write_doc(docname, doctree)
 
     def fix_genindex(self, tree):
         # type: (List[Tuple[str, List[Tuple[str, Any]]]]) -> None
@@ -448,11 +448,11 @@ class EpubBuilder(StandaloneHTMLBuilder):
             if self.config.epub_fix_images or self.config.epub_max_image_width:
                 if not Image:
                     logger.warning(__('PIL not found - copying image files'))
-                    super(EpubBuilder, self).copy_image_files()
+                    super().copy_image_files()
                 else:
                     self.copy_image_files_pil()
             else:
-                super(EpubBuilder, self).copy_image_files()
+                super().copy_image_files()
 
     def copy_download_files(self):
         # type: () -> None
@@ -471,8 +471,7 @@ class EpubBuilder(StandaloneHTMLBuilder):
                 return
             self.fix_genindex(addctx['genindexentries'])
         addctx['doctype'] = self.doctype
-        super(EpubBuilder, self).handle_page(pagename, addctx, templatename,
-                                             outfilename, event_arg)
+        super().handle_page(pagename, addctx, templatename, outfilename, event_arg)
 
     def build_mimetype(self, outdir, outname):
         # type: (str, str) -> None
diff --git a/sphinx/builders/applehelp.py b/sphinx/builders/applehelp.py
index f7379e1ba..927f98bdf 100644
--- a/sphinx/builders/applehelp.py
+++ b/sphinx/builders/applehelp.py
@@ -86,7 +86,7 @@ class AppleHelpBuilder(StandaloneHTMLBuilder):
 
     def init(self):
         # type: () -> None
-        super(AppleHelpBuilder, self).init()
+        super().init()
         # the output files for HTML help must be .html only
         self.out_suffix = '.html'
         self.link_suffix = '.html'
@@ -105,7 +105,7 @@ class AppleHelpBuilder(StandaloneHTMLBuilder):
 
     def handle_finish(self):
         # type: () -> None
-        super(AppleHelpBuilder, self).handle_finish()
+        super().handle_finish()
 
         self.finish_tasks.add_task(self.copy_localized_files)
         self.finish_tasks.add_task(self.build_helpbook)
diff --git a/sphinx/builders/devhelp.py b/sphinx/builders/devhelp.py
index cb01667b9..13abf6b3b 100644
--- a/sphinx/builders/devhelp.py
+++ b/sphinx/builders/devhelp.py
@@ -62,7 +62,7 @@ class DevhelpBuilder(StandaloneHTMLBuilder):
 
     def init(self):
         # type: () -> None
-        super(DevhelpBuilder, self).init()
+        super().init()
         self.out_suffix = '.html'
         self.link_suffix = '.html'
 
diff --git a/sphinx/builders/epub3.py b/sphinx/builders/epub3.py
index a378bd981..e41d8f3cd 100644
--- a/sphinx/builders/epub3.py
+++ b/sphinx/builders/epub3.py
@@ -129,7 +129,7 @@ class Epub3Builder(_epub_base.EpubBuilder):
         """
         writing_mode = self.config.epub_writing_mode
 
-        metadata = super(Epub3Builder, self).content_metadata()
+        metadata = super().content_metadata()
         metadata['description'] = self.esc(self.config.epub_description)
         metadata['contributor'] = self.esc(self.config.epub_contributor)
         metadata['page_progression_direction'] = PAGE_PROGRESSION_DIRECTIONS.get(writing_mode)
@@ -141,7 +141,7 @@ class Epub3Builder(_epub_base.EpubBuilder):
 
     def prepare_writing(self, docnames):
         # type: (Set[str]) -> None
-        super(Epub3Builder, self).prepare_writing(docnames)
+        super().prepare_writing(docnames)
 
         writing_mode = self.config.epub_writing_mode
         self.globalcontext['theme_writing_mode'] = THEME_WRITING_MODES.get(writing_mode)
diff --git a/sphinx/builders/gettext.py b/sphinx/builders/gettext.py
index 7ff8d0d53..d4407b305 100644
--- a/sphinx/builders/gettext.py
+++ b/sphinx/builders/gettext.py
@@ -119,7 +119,7 @@ class I18nBuilder(Builder):
 
     def init(self):
         # type: () -> None
-        super(I18nBuilder, self).init()
+        super().init()
         self.env.set_versioning_method(self.versioning_method,
                                        self.env.config.gettext_uuid)
         self.tags = I18nTags()
@@ -176,7 +176,7 @@ class LocalTimeZone(tzinfo):
 
     def __init__(self, *args, **kw):
         # type: (Any, Any) -> None
-        super(LocalTimeZone, self).__init__(*args, **kw)  # type: ignore
+        super().__init__(*args, **kw)  # type: ignore
         self.tzdelta = tzdelta
 
     def utcoffset(self, dt):
@@ -219,7 +219,7 @@ class MessageCatalogBuilder(I18nBuilder):
 
     def init(self):
         # type: () -> None
-        super(MessageCatalogBuilder, self).init()
+        super().init()
         self.create_template_bridge()
         self.templates.init(self)
 
@@ -258,11 +258,11 @@ class MessageCatalogBuilder(I18nBuilder):
     def build(self, docnames, summary=None, method='update'):
         # type: (Iterable[str], str, str) -> None
         self._extract_from_template()
-        super(MessageCatalogBuilder, self).build(docnames, summary, method)
+        super().build(docnames, summary, method)
 
     def finish(self):
         # type: () -> None
-        super(MessageCatalogBuilder, self).finish()
+        super().finish()
         data = {
             'version': self.config.version,
             'copyright': self.config.copyright,
diff --git a/sphinx/builders/html.py b/sphinx/builders/html.py
index 10a6498e2..da94a6029 100644
--- a/sphinx/builders/html.py
+++ b/sphinx/builders/html.py
@@ -122,7 +122,7 @@ class JSContainer(list):
         warnings.warn('builder.script_files is deprecated. '
                       'Please use app.add_js_file() instead.',
                       RemovedInSphinx30Warning, stacklevel=2)
-        super(JSContainer, self).insert(index, obj)
+        super().insert(index, obj)
 
     def extend(self, other):  # type: ignore
         # type: (List[str]) -> None
@@ -256,7 +256,7 @@ class StandaloneHTMLBuilder(Builder):
 
     def __init__(self, app):
         # type: (Sphinx) -> None
-        super(StandaloneHTMLBuilder, self).__init__(app)
+        super().__init__(app)
 
         # CSS files
         self.css_files = []  # type: List[Dict[str, str]]
@@ -1211,7 +1211,7 @@ class DirectoryHTMLBuilder(StandaloneHTMLBuilder):
 
     def prepare_writing(self, docnames):
         # type: (Set[str]) -> None
-        super(DirectoryHTMLBuilder, self).prepare_writing(docnames)
+        super().prepare_writing(docnames)
         self.globalcontext['no_search_suffix'] = True
 
 
@@ -1474,7 +1474,7 @@ class SerializingHTMLBuilder(StandaloneHTMLBuilder):
         self.dump_context(self.globalcontext, outfilename)
 
         # super here to dump the search index
-        super(SerializingHTMLBuilder, self).handle_finish()
+        super().handle_finish()
 
         # copy the environment file from the doctree dir to the output dir
         # as needed by the web app
diff --git a/sphinx/builders/htmlhelp.py b/sphinx/builders/htmlhelp.py
index 24f3ab2c4..54c2412db 100644
--- a/sphinx/builders/htmlhelp.py
+++ b/sphinx/builders/htmlhelp.py
@@ -200,7 +200,7 @@ class HTMLHelpBuilder(StandaloneHTMLBuilder):
         # the output files for HTML help is .html by default
         self.out_suffix = '.html'
         self.link_suffix = '.html'
-        super(HTMLHelpBuilder, self).init()
+        super().init()
         # determine the correct locale setting
         locale = chm_locales.get(self.config.language)
         if locale is not None:
@@ -227,7 +227,7 @@ class HTMLHelpBuilder(StandaloneHTMLBuilder):
             if node.get('internal') is None and 'refuri' in node:
                 node['target'] = '_blank'
 
-        super(HTMLHelpBuilder, self).write_doc(docname, doctree)
+        super().write_doc(docname, doctree)
 
     def build_hhx(self, outdir, outname):
         # type: (str, str) -> None
diff --git a/sphinx/builders/latex/transforms.py b/sphinx/builders/latex/transforms.py
index c3bc50fe3..a339f89ab 100644
--- a/sphinx/builders/latex/transforms.py
+++ b/sphinx/builders/latex/transforms.py
@@ -155,7 +155,7 @@ class FootnoteCollector(nodes.NodeVisitor):
         self.auto_footnotes = []            # type: List[nodes.footnote]
         self.used_footnote_numbers = set()  # type: Set[str]
         self.footnote_refs = []             # type: List[nodes.footnote_reference]
-        super(FootnoteCollector, self).__init__(document)
+        super().__init__(document)
 
     def unknown_visit(self, node):
         # type: (nodes.Node) -> None
@@ -365,7 +365,7 @@ class LaTeXFootnoteVisitor(nodes.NodeVisitor):
         self.pendings = []          # type: List[nodes.footnote]
         self.table_footnotes = []   # type: List[nodes.footnote]
         self.restricted = None      # type: nodes.Element
-        super(LaTeXFootnoteVisitor, self).__init__(document)
+        super().__init__(document)
 
     def unknown_visit(self, node):
         # type: (nodes.Node) -> None
diff --git a/sphinx/builders/linkcheck.py b/sphinx/builders/linkcheck.py
index 911c58c12..dc522dc07 100644
--- a/sphinx/builders/linkcheck.py
+++ b/sphinx/builders/linkcheck.py
@@ -44,7 +44,7 @@ class AnchorCheckParser(HTMLParser):
 
     def __init__(self, search_anchor):
         # type: (str) -> None
-        super(AnchorCheckParser, self).__init__()
+        super().__init__()
 
         self.search_anchor = search_anchor
         self.found = False
diff --git a/sphinx/builders/qthelp.py b/sphinx/builders/qthelp.py
index 08042fd87..4eca207f7 100644
--- a/sphinx/builders/qthelp.py
+++ b/sphinx/builders/qthelp.py
@@ -80,7 +80,7 @@ class QtHelpBuilder(StandaloneHTMLBuilder):
 
     def init(self):
         # type: () -> None
-        super(QtHelpBuilder, self).init()
+        super().init()
         # the output files for HTML help must be .html only
         self.out_suffix = '.html'
         self.link_suffix = '.html'
diff --git a/sphinx/cmd/quickstart.py b/sphinx/cmd/quickstart.py
index ce66f7352..21220a22b 100644
--- a/sphinx/cmd/quickstart.py
+++ b/sphinx/cmd/quickstart.py
@@ -216,7 +216,7 @@ class QuickstartRenderer(SphinxRenderer):
     def __init__(self, templatedir):
         # type: (str) -> None
         self.templatedir = templatedir or ''
-        super(QuickstartRenderer, self).__init__()
+        super().__init__()
 
     def render(self, template_name, context):
         # type: (str, Dict) -> str
@@ -224,7 +224,7 @@ class QuickstartRenderer(SphinxRenderer):
         if self.templatedir and path.exists(user_template):
             return self.render_from_file(user_template, context)
         else:
-            return super(QuickstartRenderer, self).render(template_name, context)
+            return super().render(template_name, context)
 
 
 def ask_user(d):
diff --git a/sphinx/deprecation.py b/sphinx/deprecation.py
index ce84f56f5..7d683cacc 100644
--- a/sphinx/deprecation.py
+++ b/sphinx/deprecation.py
@@ -34,29 +34,29 @@ class DeprecatedDict(dict):
         # type: (Dict, str, Type[Warning]) -> None
         self.message = message
         self.warning = warning
-        super(DeprecatedDict, self).__init__(data)
+        super().__init__(data)
 
     def __setitem__(self, key, value):
         # type: (str, Any) -> None
         warnings.warn(self.message, self.warning, stacklevel=2)
-        super(DeprecatedDict, self).__setitem__(key, value)
+        super().__setitem__(key, value)
 
     def setdefault(self, key, default=None):
         # type: (str, Any) -> None
         warnings.warn(self.message, self.warning, stacklevel=2)
-        return super(DeprecatedDict, self).setdefault(key, default)
+        return super().setdefault(key, default)
 
     def __getitem__(self, key):
         # type: (str) -> None
         warnings.warn(self.message, self.warning, stacklevel=2)
-        return super(DeprecatedDict, self).__getitem__(key)
+        return super().__getitem__(key)
 
     def get(self, key, default=None):
         # type: (str, Any) -> None
         warnings.warn(self.message, self.warning, stacklevel=2)
-        return super(DeprecatedDict, self).get(key, default)
+        return super().get(key, default)
 
     def update(self, other=None):  # type: ignore
         # type: (Dict) -> None
         warnings.warn(self.message, self.warning, stacklevel=2)
-        super(DeprecatedDict, self).update(other)
+        super().update(other)
diff --git a/sphinx/directives/code.py b/sphinx/directives/code.py
index 05dafb623..554947160 100644
--- a/sphinx/directives/code.py
+++ b/sphinx/directives/code.py
@@ -62,7 +62,7 @@ class HighlightLang(Highlight):
         warnings.warn('highlightlang directive is deprecated. '
                       'Please use highlight directive instead.',
                       RemovedInSphinx40Warning, stacklevel=2)
-        return super(HighlightLang, self).run()
+        return super().run()
 
 
 def dedent_lines(lines, dedent, location=None):
diff --git a/sphinx/directives/other.py b/sphinx/directives/other.py
index 89fdd4df5..c6d36d8f2 100644
--- a/sphinx/directives/other.py
+++ b/sphinx/directives/other.py
@@ -387,11 +387,11 @@ class Include(BaseInclude, SphinxDirective):
         if self.arguments[0].startswith('<') and \
            self.arguments[0].endswith('>'):
             # docutils "standard" includes, do not do path processing
-            return super(Include, self).run()
+            return super().run()
         rel_filename, filename = self.env.relfn2path(self.arguments[0])
         self.arguments[0] = filename
         self.env.note_included(filename)
-        return super(Include, self).run()
+        return super().run()
 
 
 def setup(app):
diff --git a/sphinx/directives/patches.py b/sphinx/directives/patches.py
index 7992d30d9..9413c9385 100644
--- a/sphinx/directives/patches.py
+++ b/sphinx/directives/patches.py
@@ -32,7 +32,7 @@ class Figure(images.Figure):
     def run(self):
         # type: () -> List[nodes.Node]
         name = self.options.pop('name', None)
-        result = super(Figure, self).run()
+        result = super().run()
         if len(result) == 2 or isinstance(result[0], nodes.system_message):
             return result
 
@@ -54,7 +54,7 @@ class Figure(images.Figure):
 class Meta(html.Meta, SphinxDirective):
     def run(self):
         # type: () -> List[nodes.Node]
-        result = super(Meta, self).run()
+        result = super().run()
         for node in result:
             if (isinstance(node, nodes.pending) and
                isinstance(node.details['nodes'][0], html.MetaBody.meta)):
@@ -76,7 +76,7 @@ class RSTTable(tables.RSTTable):
 
     def make_title(self):
         # type: () -> Tuple[nodes.title, List[nodes.system_message]]
-        title, message = super(RSTTable, self).make_title()
+        title, message = super().make_title()
         if title:
             set_source_info(self, title)
 
@@ -90,7 +90,7 @@ class CSVTable(tables.CSVTable):
 
     def make_title(self):
         # type: () -> Tuple[nodes.title, List[nodes.system_message]]
-        title, message = super(CSVTable, self).make_title()
+        title, message = super().make_title()
         if title:
             set_source_info(self, title)
 
@@ -104,7 +104,7 @@ class ListTable(tables.ListTable):
 
     def make_title(self):
         # type: () -> Tuple[nodes.title, List[nodes.system_message]]
-        title, message = super(ListTable, self).make_title()
+        title, message = super().make_title()
         if title:
             set_source_info(self, title)
 
diff --git a/sphinx/domains/__init__.py b/sphinx/domains/__init__.py
index 5c7965d40..d1d4dcdd5 100644
--- a/sphinx/domains/__init__.py
+++ b/sphinx/domains/__init__.py
@@ -245,7 +245,7 @@ class Domain:
             def run(self):
                 # type: () -> List[nodes.Node]
                 self.name = fullname
-                return super(DirectiveAdapter, self).run()
+                return super().run()
         self._directive_cache[name] = DirectiveAdapter
         return DirectiveAdapter
 
diff --git a/sphinx/domains/cpp.py b/sphinx/domains/cpp.py
index 8269258b9..31329c96d 100644
--- a/sphinx/domains/cpp.py
+++ b/sphinx/domains/cpp.py
@@ -3736,7 +3736,7 @@ class Symbol:
         if key == "children":
             assert False
         else:
-            return super(Symbol, self).__setattr__(key, value)
+            return super().__setattr__(key, value)
 
     def __init__(self,
                  parent,          # type: Symbol
@@ -6432,7 +6432,7 @@ class CPPObject(ObjectDescription):
             symbol = parentSymbol.add_name(name)
             env.temp_data['cpp:last_symbol'] = symbol
             return []
-        return super(CPPObject, self).run()
+        return super().run()
 
     def handle_signature(self, sig, signode):
         # type: (str, addnodes.desc_signature) -> Any
diff --git a/sphinx/domains/python.py b/sphinx/domains/python.py
index c0df50979..a59bd9260 100644
--- a/sphinx/domains/python.py
+++ b/sphinx/domains/python.py
@@ -125,8 +125,8 @@ class PyXrefMixin:
                   env=None,                  # type: BuildEnvironment
                   ):
         # type: (...) -> nodes.Node
-        result = super(PyXrefMixin, self).make_xref(rolename, domain, target,  # type: ignore
-                                                    innernode, contnode, env)
+        result = super().make_xref(rolename, domain, target,  # type: ignore
+                                   innernode, contnode, env)
         result['refspecific'] = True
         if target.startswith(('.', '~')):
             prefix, result['reftarget'] = target[0], target[1:]
@@ -176,8 +176,7 @@ class PyField(PyXrefMixin, Field):
             # None is not a type, so use obj role instead.
             rolename = 'obj'
 
-        return super(PyField, self).make_xref(rolename, domain, target,
-                                              innernode, contnode, env)
+        return super().make_xref(rolename, domain, target, innernode, contnode, env)
 
 
 class PyGroupedField(PyXrefMixin, GroupedField):
@@ -192,8 +191,7 @@ class PyTypedField(PyXrefMixin, TypedField):
             # None is not a type, so use obj role instead.
             rolename = 'obj'
 
-        return super(PyTypedField, self).make_xref(rolename, domain, target,
-                                                   innernode, contnode, env)
+        return super().make_xref(rolename, domain, target, innernode, contnode, env)
 
 
 class PyObject(ObjectDescription):
@@ -543,7 +541,7 @@ class PyDecoratorMixin:
     """
     def handle_signature(self, sig, signode):
         # type: (str, addnodes.desc_signature) -> Tuple[str, str]
-        ret = super(PyDecoratorMixin, self).handle_signature(sig, signode)  # type: ignore
+        ret = super().handle_signature(sig, signode)  # type: ignore
         signode.insert(0, addnodes.desc_addname('@', '@'))
         return ret
 
@@ -560,7 +558,7 @@ class PyDecoratorFunction(PyDecoratorMixin, PyModulelevel):
         # type: () -> List[nodes.Node]
         # a decorator function is a function after all
         self.name = 'py:function'
-        return super(PyDecoratorFunction, self).run()
+        return super().run()
 
 
 class PyDecoratorMethod(PyDecoratorMixin, PyClassmember):
@@ -570,7 +568,7 @@ class PyDecoratorMethod(PyDecoratorMixin, PyClassmember):
     def run(self):
         # type: () -> List[nodes.Node]
         self.name = 'py:method'
-        return super(PyDecoratorMethod, self).run()
+        return super().run()
 
 
 class PyModule(SphinxDirective):
diff --git a/sphinx/domains/std.py b/sphinx/domains/std.py
index 12d0dfa1b..5d40dc914 100644
--- a/sphinx/domains/std.py
+++ b/sphinx/domains/std.py
@@ -529,7 +529,7 @@ class StandardDomain(Domain):
 
     def __init__(self, env):
         # type: (BuildEnvironment) -> None
-        super(StandardDomain, self).__init__(env)
+        super().__init__(env)
 
         # set up enumerable nodes
         self.enumerable_nodes = copy(self.enumerable_nodes)  # create a copy for this instance
diff --git a/sphinx/errors.py b/sphinx/errors.py
index df858fa87..b910c529f 100644
--- a/sphinx/errors.py
+++ b/sphinx/errors.py
@@ -54,7 +54,7 @@ class ExtensionError(SphinxError):
 
     def __init__(self, message, orig_exc=None):
         # type: (str, Exception) -> None
-        super(ExtensionError, self).__init__(message)
+        super().__init__(message)
         self.message = message
         self.orig_exc = orig_exc
 
@@ -67,7 +67,7 @@ class ExtensionError(SphinxError):
 
     def __str__(self):
         # type: () -> str
-        parent_str = super(ExtensionError, self).__str__()
+        parent_str = super().__str__()
         if self.orig_exc:
             return '%s (exception: %s)' % (parent_str, self.orig_exc)
         return parent_str
diff --git a/sphinx/ext/autodoc/__init__.py b/sphinx/ext/autodoc/__init__.py
index 45be2ab10..480e92788 100644
--- a/sphinx/ext/autodoc/__init__.py
+++ b/sphinx/ext/autodoc/__init__.py
@@ -782,7 +782,7 @@ class ModuleDocumenter(Documenter):
 
     def __init__(self, *args):
         # type: (Any) -> None
-        super(ModuleDocumenter, self).__init__(*args)
+        super().__init__(*args)
         merge_special_members_option(self.options)
 
     @classmethod
@@ -800,7 +800,7 @@ class ModuleDocumenter(Documenter):
 
     def parse_name(self):
         # type: () -> bool
-        ret = super(ModuleDocumenter, self).parse_name()
+        ret = super().parse_name()
         if self.args or self.retann:
             logger.warning(__('signature arguments or return annotation '
                               'given for automodule %s') % self.fullname,
@@ -962,7 +962,7 @@ class DocstringSignatureMixin:
         lines = getattr(self, '_new_docstrings', None)
         if lines is not None:
             return lines
-        return super(DocstringSignatureMixin, self).get_doc(None, ignore)  # type: ignore
+        return super().get_doc(None, ignore)  # type: ignore
 
     def format_signature(self):
         # type: () -> str
@@ -972,7 +972,7 @@ class DocstringSignatureMixin:
             result = self._find_signature()
             if result is not None:
                 self.args, self.retann = result
-        return super(DocstringSignatureMixin, self).format_signature()  # type: ignore
+        return super().format_signature()  # type: ignore
 
 
 class DocstringStripSignatureMixin(DocstringSignatureMixin):
@@ -991,7 +991,7 @@ class DocstringStripSignatureMixin(DocstringSignatureMixin):
                 # DocstringSignatureMixin.format_signature.
                 # Documenter.format_signature use self.args value to format.
                 _args, self.retann = result
-        return super(DocstringStripSignatureMixin, self).format_signature()
+        return super().format_signature()
 
 
 class FunctionDocumenter(DocstringSignatureMixin, ModuleLevelDocumenter):  # type: ignore
@@ -1059,7 +1059,7 @@ class ClassDocumenter(DocstringSignatureMixin, ModuleLevelDocumenter):  # type:
 
     def __init__(self, *args):
         # type: (Any) -> None
-        super(ClassDocumenter, self).__init__(*args)
+        super().__init__(*args)
         merge_special_members_option(self.options)
 
     @classmethod
@@ -1069,7 +1069,7 @@ class ClassDocumenter(DocstringSignatureMixin, ModuleLevelDocumenter):  # type:
 
     def import_object(self):
         # type: () -> Any
-        ret = super(ClassDocumenter, self).import_object()
+        ret = super().import_object()
         # if the class is documented under another name, document it
         # as data/attribute
         if ret:
@@ -1101,13 +1101,13 @@ class ClassDocumenter(DocstringSignatureMixin, ModuleLevelDocumenter):  # type:
         if self.doc_as_attr:
             return ''
 
-        return super(ClassDocumenter, self).format_signature()
+        return super().format_signature()
 
     def add_directive_header(self, sig):
         # type: (str) -> None
         if self.doc_as_attr:
             self.directivetype = 'attribute'
-        super(ClassDocumenter, self).add_directive_header(sig)
+        super().add_directive_header(sig)
 
         # add inheritance info, if wanted
         if not self.doc_as_attr and self.options.show_inheritance:
@@ -1176,15 +1176,15 @@ class ClassDocumenter(DocstringSignatureMixin, ModuleLevelDocumenter):  # type:
                 if module and module != parentmodule:
                     classname = str(module) + u'.' + str(classname)
                 content = StringList([_('alias of :class:`%s`') % classname], source='')
-                super(ClassDocumenter, self).add_content(content, no_docstring=True)
+                super().add_content(content, no_docstring=True)
         else:
-            super(ClassDocumenter, self).add_content(more_content)
+            super().add_content(more_content)
 
     def document_members(self, all_members=False):
         # type: (bool) -> None
         if self.doc_as_attr:
             return
-        super(ClassDocumenter, self).document_members(all_members)
+        super().document_members(all_members)
 
     def generate(self, more_content=None, real_modname=None,
                  check_module=False, all_members=False):
@@ -1194,9 +1194,9 @@ class ClassDocumenter(DocstringSignatureMixin, ModuleLevelDocumenter):  # type:
         # If a class gets imported into the module real_modname
         # the analyzer won't find the source of the class, if
         # it looks in real_modname.
-        return super(ClassDocumenter, self).generate(more_content=more_content,
-                                                     check_module=check_module,
-                                                     all_members=all_members)
+        return super().generate(more_content=more_content,
+                                check_module=check_module,
+                                all_members=all_members)
 
 
 class ExceptionDocumenter(ClassDocumenter):
@@ -1232,7 +1232,7 @@ class DataDocumenter(ModuleLevelDocumenter):
 
     def add_directive_header(self, sig):
         # type: (str) -> None
-        super(DataDocumenter, self).add_directive_header(sig)
+        super().add_directive_header(sig)
         sourcename = self.get_sourcename()
         if not self.options.annotation:
             try:
@@ -1273,7 +1273,7 @@ class MethodDocumenter(DocstringSignatureMixin, ClassLevelDocumenter):  # type:
 
     def import_object(self):
         # type: () -> Any
-        ret = super(MethodDocumenter, self).import_object()
+        ret = super().import_object()
         if not ret:
             return ret
 
@@ -1351,7 +1351,7 @@ class AttributeDocumenter(DocstringStripSignatureMixin, ClassLevelDocumenter):
 
     def import_object(self):
         # type: () -> Any
-        ret = super(AttributeDocumenter, self).import_object()
+        ret = super().import_object()
         if isenumattribute(self.object):
             self.object = self.object.value
         if isdescriptor(self.object) and \
@@ -1369,7 +1369,7 @@ class AttributeDocumenter(DocstringStripSignatureMixin, ClassLevelDocumenter):
 
     def add_directive_header(self, sig):
         # type: (str) -> None
-        super(AttributeDocumenter, self).add_directive_header(sig)
+        super().add_directive_header(sig)
         sourcename = self.get_sourcename()
         if not self.options.annotation:
             if not self._datadescriptor:
@@ -1391,7 +1391,7 @@ class AttributeDocumenter(DocstringStripSignatureMixin, ClassLevelDocumenter):
             # if it's not a data descriptor, its docstring is very probably the
             # wrong thing to display
             no_docstring = True
-        super(AttributeDocumenter, self).add_content(more_content, no_docstring)
+        super().add_content(more_content, no_docstring)
 
 
 class InstanceAttributeDocumenter(AttributeDocumenter):
@@ -1423,7 +1423,7 @@ class InstanceAttributeDocumenter(AttributeDocumenter):
     def add_content(self, more_content, no_docstring=False):
         # type: (Any, bool) -> None
         """Never try to get a docstring from the object."""
-        super(InstanceAttributeDocumenter, self).add_content(more_content, no_docstring=True)
+        super().add_content(more_content, no_docstring=True)
 
 
 def get_documenters(app):
diff --git a/sphinx/ext/autodoc/importer.py b/sphinx/ext/autodoc/importer.py
index 7f906a6b9..b503fc2f1 100644
--- a/sphinx/ext/autodoc/importer.py
+++ b/sphinx/ext/autodoc/importer.py
@@ -82,7 +82,7 @@ class _MockModule(ModuleType):
 
     def __init__(self, name, loader=None):
         # type: (str, _MockImporter) -> None
-        super(_MockModule, self).__init__(name)
+        super().__init__(name)
         self.__all__ = []  # type: List[str]
         self.__path__ = []  # type: List[str]
 
@@ -143,7 +143,7 @@ class MockLoader(Loader):
     """A loader for mocking."""
     def __init__(self, finder):
         # type: (MockFinder) -> None
-        super(MockLoader, self).__init__()
+        super().__init__()
         self.finder = finder
 
     def create_module(self, spec):
@@ -162,7 +162,7 @@ class MockFinder(MetaPathFinder):
 
     def __init__(self, modnames):
         # type: (List[str]) -> None
-        super(MockFinder, self).__init__()
+        super().__init__()
         self.modnames = modnames
         self.loader = MockLoader(self)
         self.mocked_modules = []  # type: List[str]
diff --git a/sphinx/ext/autosummary/__init__.py b/sphinx/ext/autosummary/__init__.py
index 4717f998b..945d9f454 100644
--- a/sphinx/ext/autosummary/__init__.py
+++ b/sphinx/ext/autosummary/__init__.py
@@ -177,7 +177,7 @@ _app = None  # type: Sphinx
 class FakeDirective(DocumenterBridge):
     def __init__(self):
         # type: () -> None
-        super(FakeDirective, self).__init__({}, None, Options(), 0)  # type: ignore
+        super().__init__({}, None, Options(), 0)  # type: ignore
 
 
 def get_documenter(app, obj, parent):
diff --git a/sphinx/ext/doctest.py b/sphinx/ext/doctest.py
index cd2698d99..097550cd3 100644
--- a/sphinx/ext/doctest.py
+++ b/sphinx/ext/doctest.py
@@ -259,7 +259,7 @@ class SphinxDocTestRunner(doctest.DocTestRunner):
         old_stdout = sys.stdout
         sys.stdout = string_io
         try:
-            res = super(SphinxDocTestRunner, self).summarize(verbose)
+            res = super().summarize(verbose)
         finally:
             sys.stdout = old_stdout
         out(string_io.getvalue())
diff --git a/sphinx/ext/imgmath.py b/sphinx/ext/imgmath.py
index 5e2f22511..bd9b4b45d 100644
--- a/sphinx/ext/imgmath.py
+++ b/sphinx/ext/imgmath.py
@@ -50,7 +50,7 @@ class MathExtError(SphinxError):
             msg += '\n[stderr]\n' + stderr.decode(sys_encoding, 'replace')
         if stdout:
             msg += '\n[stdout]\n' + stdout.decode(sys_encoding, 'replace')
-        super(MathExtError, self).__init__(msg)
+        super().__init__(msg)
 
 
 class InvokeError(SphinxError):
diff --git a/sphinx/ext/mathbase.py b/sphinx/ext/mathbase.py
index e5ed2d6db..2138b50ed 100644
--- a/sphinx/ext/mathbase.py
+++ b/sphinx/ext/mathbase.py
@@ -33,7 +33,7 @@ class MathDirective(MathDirectiveBase):
         warnings.warn('sphinx.ext.mathbase.MathDirective is moved to '
                       'sphinx.directives.patches package.',
                       RemovedInSphinx30Warning, stacklevel=2)
-        return super(MathDirective, self).run()
+        return super().run()
 
 
 def math_role(role, rawtext, text, lineno, inliner, options={}, content=[]):
diff --git a/sphinx/ext/napoleon/docstring.py b/sphinx/ext/napoleon/docstring.py
index 3f971aa75..10b42cb80 100644
--- a/sphinx/ext/napoleon/docstring.py
+++ b/sphinx/ext/napoleon/docstring.py
@@ -913,8 +913,7 @@ class NumpyDocstring(GoogleDocstring):
                  obj=None, options=None):
         # type: (Union[str, List[str]], SphinxConfig, Sphinx, str, str, Any, Any) -> None
         self._directive_sections = ['.. index::']
-        super(NumpyDocstring, self).__init__(docstring, config, app, what,
-                                             name, obj, options)
+        super().__init__(docstring, config, app, what, name, obj, options)
 
     def _consume_field(self, parse_type=True, prefer_type=False):
         # type: (bool, bool) -> Tuple[str, str, List[str]]
diff --git a/sphinx/ext/napoleon/iterators.py b/sphinx/ext/napoleon/iterators.py
index 0ad8038f3..7e1833c32 100644
--- a/sphinx/ext/napoleon/iterators.py
+++ b/sphinx/ext/napoleon/iterators.py
@@ -232,7 +232,7 @@ class modify_iter(peek_iter):
         if not callable(self.modifier):
             raise TypeError('modify_iter(o, modifier): '
                             'modifier must be callable')
-        super(modify_iter, self).__init__(*args)
+        super().__init__(*args)
 
     def _fillcache(self, n):
         # type: (int) -> None
diff --git a/sphinx/ext/todo.py b/sphinx/ext/todo.py
index fb5f19e54..858c0bf2f 100644
--- a/sphinx/ext/todo.py
+++ b/sphinx/ext/todo.py
@@ -64,7 +64,7 @@ class Todo(BaseAdmonition, SphinxDirective):
         if not self.options.get('class'):
             self.options['class'] = ['admonition-todo']
 
-        (todo,) = super(Todo, self).run()  # type: Tuple[nodes.Node]
+        (todo,) = super().run()  # type: Tuple[nodes.Node]
         if isinstance(todo, nodes.system_message):
             return [todo]
         elif isinstance(todo, todo_node):
diff --git a/sphinx/io.py b/sphinx/io.py
index d405081b1..1b326b804 100644
--- a/sphinx/io.py
+++ b/sphinx/io.py
@@ -65,18 +65,18 @@ class SphinxBaseReader(standalone.Reader):
     def __init__(self, app, *args, **kwargs):
         # type: (Sphinx, Any, Any) -> None
         self.env = app.env
-        super(SphinxBaseReader, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
 
     def get_transforms(self):
         # type: () -> List[Type[Transform]]
-        return super(SphinxBaseReader, self).get_transforms() + self.transforms
+        return super().get_transforms() + self.transforms
 
     def new_document(self):
         # type: () -> nodes.document
         """Creates a new document object which having a special reporter object good
         for logging.
         """
-        document = super(SphinxBaseReader, self).new_document()
+        document = super().new_document()
 
         # substitute transformer
         document.transformer = SphinxTransformer(document)
@@ -104,7 +104,7 @@ class SphinxStandaloneReader(SphinxBaseReader):
     def __init__(self, app, *args, **kwargs):
         # type: (Sphinx, Any, Any) -> None
         self.transforms = self.transforms + app.registry.get_transforms()
-        super(SphinxStandaloneReader, self).__init__(app, *args, **kwargs)
+        super().__init__(app, *args, **kwargs)
 
 
 class SphinxI18nReader(SphinxBaseReader):
@@ -166,7 +166,7 @@ class SphinxBaseFileInput(FileInput):
         self.env = env
 
         kwds['error_handler'] = 'sphinx'  # py3: handle error on open.
-        super(SphinxBaseFileInput, self).__init__(*args, **kwds)
+        super().__init__(*args, **kwds)
 
     def read(self):
         # type: () -> str
@@ -174,7 +174,7 @@ class SphinxBaseFileInput(FileInput):
 
         After reading, it emits Sphinx event ``source-read``.
         """
-        data = super(SphinxBaseFileInput, self).read()
+        data = super().read()
 
         # emit source-read event
         arg = [data]
@@ -237,7 +237,7 @@ class SphinxRSTFileInput(SphinxBaseFileInput):
         warnings.warn('SphinxRSTFileInput is deprecated.',
                       RemovedInSphinx30Warning, stacklevel=2)
 
-        inputstring = super(SphinxRSTFileInput, self).read()
+        inputstring = super().read()
         lines = string2lines(inputstring, convert_whitespace=True)
         content = StringList()
         for lineno, line in enumerate(lines):
diff --git a/sphinx/make_mode.py b/sphinx/make_mode.py
index ffc609a03..fa3fed58d 100644
--- a/sphinx/make_mode.py
+++ b/sphinx/make_mode.py
@@ -29,7 +29,7 @@ class Make(make_mode.Make):
         warnings.warn('sphinx.make_mode.Make is deprecated. '
                       'Please use sphinx.cmd.make_mode.Make instead.',
                       RemovedInSphinx30Warning, stacklevel=2)
-        super(Make, self).__init__(*args)
+        super().__init__(*args)
 
 
 def run_make_mode(args):
diff --git a/sphinx/parsers.py b/sphinx/parsers.py
index 142bd5d6a..438e5c718 100644
--- a/sphinx/parsers.py
+++ b/sphinx/parsers.py
@@ -68,7 +68,7 @@ class RSTParser(docutils.parsers.rst.Parser, Parser):
 
         refs: sphinx.io.SphinxStandaloneReader
         """
-        transforms = super(RSTParser, self).get_transforms()
+        transforms = super().get_transforms()
         transforms.remove(SmartQuotes)
         return transforms
 
diff --git a/sphinx/pycode/parser.py b/sphinx/pycode/parser.py
index 71d7df781..71630aa3d 100644
--- a/sphinx/pycode/parser.py
+++ b/sphinx/pycode/parser.py
@@ -196,7 +196,7 @@ class AfterCommentParser(TokenProcessor):
 
     def __init__(self, lines):
         # type: (List[str]) -> None
-        super(AfterCommentParser, self).__init__(lines)
+        super().__init__(lines)
         self.comment = None  # type: str
 
     def fetch_rvalue(self):
@@ -249,7 +249,7 @@ class VariableCommentPicker(ast.NodeVisitor):
         self.comments = {}              # type: Dict[Tuple[str, str], str]
         self.previous = None            # type: ast.AST
         self.deforders = {}             # type: Dict[str, int]
-        super(VariableCommentPicker, self).__init__()
+        super().__init__()
 
     def add_entry(self, name):
         # type: (str) -> None
@@ -293,7 +293,7 @@ class VariableCommentPicker(ast.NodeVisitor):
     def visit(self, node):
         # type: (ast.AST) -> None
         """Updates self.previous to ."""
-        super(VariableCommentPicker, self).visit(node)
+        super().visit(node)
         self.previous = node
 
     def visit_Assign(self, node):
@@ -388,7 +388,7 @@ class VariableCommentPicker(ast.NodeVisitor):
 class DefinitionFinder(TokenProcessor):
     def __init__(self, lines):
         # type: (List[str]) -> None
-        super(DefinitionFinder, self).__init__(lines)
+        super().__init__(lines)
         self.decorator = None   # type: Token
         self.context = []       # type: List[str]
         self.indents = []       # type: List
diff --git a/sphinx/roles.py b/sphinx/roles.py
index 59f5b297e..0c02f230e 100644
--- a/sphinx/roles.py
+++ b/sphinx/roles.py
@@ -171,8 +171,7 @@ class XRefRole:
 class AnyXRefRole(XRefRole):
     def process_link(self, env, refnode, has_explicit_title, title, target):
         # type: (BuildEnvironment, nodes.Element, bool, str, str) -> Tuple[str, str]
-        result = super(AnyXRefRole, self).process_link(env, refnode, has_explicit_title,
-                                                       title, target)
+        result = super().process_link(env, refnode, has_explicit_title, title, target)
         # add all possible context info (i.e. std:program, py:module etc.)
         refnode.attributes.update(env.ref_context)
         return result
diff --git a/sphinx/search/__init__.py b/sphinx/search/__init__.py
index 7d8156bea..f98485456 100644
--- a/sphinx/search/__init__.py
+++ b/sphinx/search/__init__.py
@@ -198,7 +198,7 @@ class WordCollector(nodes.NodeVisitor):
 
     def __init__(self, document, lang):
         # type: (nodes.document, SearchLanguage) -> None
-        super(WordCollector, self).__init__(document)
+        super().__init__(document)
         self.found_words = []           # type: List[str]
         self.found_title_words = []     # type: List[str]
         self.lang = lang
diff --git a/sphinx/search/ja.py b/sphinx/search/ja.py
index 7c87ffe44..e86f02711 100644
--- a/sphinx/search/ja.py
+++ b/sphinx/search/ja.py
@@ -64,7 +64,7 @@ class BaseSplitter:
 class MecabSplitter(BaseSplitter):
     def __init__(self, options):
         # type: (Dict) -> None
-        super(MecabSplitter, self).__init__(options)
+        super().__init__(options)
         self.ctypes_libmecab = None     # type: Any
         self.ctypes_mecab = None        # type: Any
         if not native_module:
@@ -138,7 +138,7 @@ MeCabBinder = MecabSplitter  # keep backward compatibility until Sphinx-1.6
 class JanomeSplitter(BaseSplitter):
     def __init__(self, options):
         # type: (Dict) -> None
-        super(JanomeSplitter, self).__init__(options)
+        super().__init__(options)
         self.user_dict = options.get('user_dic')
         self.user_dict_enc = options.get('user_dic_enc', 'utf8')
         self.init_tokenizer()
diff --git a/sphinx/testing/util.py b/sphinx/testing/util.py
index 13147a3f9..8fe2f7ee0 100644
--- a/sphinx/testing/util.py
+++ b/sphinx/testing/util.py
@@ -139,9 +139,9 @@ class SphinxTestApp(application.Sphinx):
                                       if v.startswith('visit_'))
 
         try:
-            super(SphinxTestApp, self).__init__(srcdir, confdir, outdir, doctreedir,
-                                                buildername, confoverrides, status, warning,
-                                                freshenv, warningiserror, tags)
+            super().__init__(srcdir, confdir, outdir, doctreedir,
+                             buildername, confoverrides, status, warning,
+                             freshenv, warningiserror, tags)
         except Exception:
             self.cleanup()
             raise
diff --git a/sphinx/transforms/__init__.py b/sphinx/transforms/__init__.py
index 6e189b35f..2268e318c 100644
--- a/sphinx/transforms/__init__.py
+++ b/sphinx/transforms/__init__.py
@@ -88,7 +88,7 @@ class SphinxTransformer(Transformer):
             if not hasattr(self.document.settings, 'env') and self.env:
                 self.document.settings.env = self.env
 
-            super(SphinxTransformer, self).apply_transforms()
+            super().apply_transforms()
         else:
             # wrap the target node by document node during transforming
             try:
@@ -97,7 +97,7 @@ class SphinxTransformer(Transformer):
                     document.settings.env = self.env
                 document += self.document
                 self.document = document
-                super(SphinxTransformer, self).apply_transforms()
+                super().apply_transforms()
             finally:
                 self.document = self.document[0]
 
@@ -355,7 +355,7 @@ class SphinxSmartQuotes(SmartQuotes, SphinxTransform):
         # override default settings with :confval:`smartquotes_action`
         self.smartquotes_action = self.config.smartquotes_action
 
-        super(SphinxSmartQuotes, self).apply()
+        super().apply()
 
     def is_available(self):
         # type: () -> bool
diff --git a/sphinx/transforms/post_transforms/code.py b/sphinx/transforms/post_transforms/code.py
index 8536fab6e..651f88929 100644
--- a/sphinx/transforms/post_transforms/code.py
+++ b/sphinx/transforms/post_transforms/code.py
@@ -55,7 +55,7 @@ class HighlightLanguageVisitor(nodes.NodeVisitor):
         # type: (nodes.document, str) -> None
         self.default_setting = HighlightSetting(default_language, sys.maxsize)
         self.settings = []  # type: List[HighlightSetting]
-        super(HighlightLanguageVisitor, self).__init__(document)
+        super().__init__(document)
 
     def unknown_visit(self, node):
         # type: (nodes.Node) -> None
diff --git a/sphinx/transforms/post_transforms/images.py b/sphinx/transforms/post_transforms/images.py
index ff8c9f9cc..00b897d64 100644
--- a/sphinx/transforms/post_transforms/images.py
+++ b/sphinx/transforms/post_transforms/images.py
@@ -203,7 +203,7 @@ class ImageConverter(BaseImageConverter):
         self.available = None   # type: bool
                                 # the converter is available or not.
                                 # Will be checked at first conversion
-        super(ImageConverter, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
 
     def match(self, node):
         # type: (nodes.image) -> bool
diff --git a/sphinx/util/__init__.py b/sphinx/util/__init__.py
index e1d39718c..5da23537f 100644
--- a/sphinx/util/__init__.py
+++ b/sphinx/util/__init__.py
@@ -499,7 +499,7 @@ def force_decode(string, encoding):
 
 class attrdict(dict):
     def __init__(self, *args, **kwargs):
-        super(attrdict, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
         warnings.warn('The attrdict class is deprecated.',
                       RemovedInSphinx40Warning, stacklevel=2)
 
diff --git a/sphinx/util/docfields.py b/sphinx/util/docfields.py
index 34b5e8b9d..885e5eb2d 100644
--- a/sphinx/util/docfields.py
+++ b/sphinx/util/docfields.py
@@ -141,7 +141,7 @@ class GroupedField(Field):
     def __init__(self, name, names=(), label=None, rolename=None,
                  can_collapse=False):
         # type: (str, Tuple[str, ...], str, str, bool) -> None
-        super(GroupedField, self).__init__(name, names, label, True, rolename)
+        super().__init__(name, names, label, True, rolename)
         self.can_collapse = can_collapse
 
     def make_field(self,
@@ -194,7 +194,7 @@ class TypedField(GroupedField):
     def __init__(self, name, names=(), typenames=(), label=None,
                  rolename=None, typerolename=None, can_collapse=False):
         # type: (str, Tuple[str, ...], Tuple[str, ...], str, str, str, bool) -> None
-        super(TypedField, self).__init__(name, names, label, rolename, can_collapse)
+        super().__init__(name, names, label, rolename, can_collapse)
         self.typenames = typenames
         self.typerolename = typerolename
 
diff --git a/sphinx/util/docutils.py b/sphinx/util/docutils.py
index 3e36565f7..9e2ee740a 100644
--- a/sphinx/util/docutils.py
+++ b/sphinx/util/docutils.py
@@ -289,8 +289,8 @@ class LoggingReporter(Reporter):
                  error_handler='backslashreplace'):
         # type: (str, int, int, bool, str) -> None
         stream = cast(IO, WarningStream())
-        super(LoggingReporter, self).__init__(source, report_level, halt_level,
-                                              stream, debug, error_handler=error_handler)
+        super().__init__(source, report_level, halt_level,
+                         stream, debug, error_handler=error_handler)
 
 
 class NullReporter(Reporter):
@@ -298,7 +298,7 @@ class NullReporter(Reporter):
 
     def __init__(self):
         # type: () -> None
-        super(NullReporter, self).__init__('', 999, 4)
+        super().__init__('', 999, 4)
 
 
 def is_html5_writer_available():
@@ -349,7 +349,7 @@ class SphinxFileOutput(FileOutput):
     def __init__(self, **kwargs):
         # type: (Any) -> None
         self.overwrite_if_changed = kwargs.pop('overwrite_if_changed', False)
-        super(SphinxFileOutput, self).__init__(**kwargs)
+        super().__init__(**kwargs)
 
     def write(self, data):
         # type: (str) -> str
@@ -360,7 +360,7 @@ class SphinxFileOutput(FileOutput):
                 if f.read() == data:
                     return data
 
-        return super(SphinxFileOutput, self).write(data)
+        return super().write(data)
 
 
 class SphinxDirective(Directive):
@@ -396,7 +396,7 @@ class SphinxTranslator(nodes.NodeVisitor):
 
     def __init__(self, builder, document):
         # type: (Builder, nodes.document) -> None
-        super(SphinxTranslator, self).__init__(document)
+        super().__init__(document)
         self.builder = builder
         self.config = builder.config
         self.settings = document.settings
diff --git a/sphinx/util/jsonimpl.py b/sphinx/util/jsonimpl.py
index ba47cf29f..43beb19da 100644
--- a/sphinx/util/jsonimpl.py
+++ b/sphinx/util/jsonimpl.py
@@ -25,7 +25,7 @@ class SphinxJSONEncoder(json.JSONEncoder):
         # type: (Any) -> str
         if isinstance(obj, UserString):
             return text_type(obj)
-        return super(SphinxJSONEncoder, self).default(obj)
+        return super().default(obj)
 
 
 def dump(obj, fp, *args, **kwds):
diff --git a/sphinx/util/logging.py b/sphinx/util/logging.py
index ad4978022..b1fb05070 100644
--- a/sphinx/util/logging.py
+++ b/sphinx/util/logging.py
@@ -100,7 +100,7 @@ class SphinxLogRecord(logging.LogRecord):
 
     def getMessage(self):
         # type: () -> str
-        message = super(SphinxLogRecord, self).getMessage()
+        message = super().getMessage()
         location = getattr(self, 'location', None)
         if location:
             message = '%s: %s%s' % (location, self.prefix, message)
@@ -126,10 +126,10 @@ class SphinxLoggerAdapter(logging.LoggerAdapter):
     def log(self, level, msg, *args, **kwargs):  # type: ignore
         # type: (Union[int, str], str, Any, Any) -> None
         if isinstance(level, int):
-            super(SphinxLoggerAdapter, self).log(level, msg, *args, **kwargs)
+            super().log(level, msg, *args, **kwargs)
         else:
             levelno = LEVEL_NAMES[level]
-            super(SphinxLoggerAdapter, self).log(levelno, msg, *args, **kwargs)
+            super().log(levelno, msg, *args, **kwargs)
 
     def verbose(self, msg, *args, **kwargs):
         # type: (str, Any, Any) -> None
@@ -171,7 +171,7 @@ class NewLineStreamHandler(logging.StreamHandler):
             if getattr(record, 'nonl', False):
                 # skip appending terminator when nonl=True
                 self.terminator = ''
-            super(NewLineStreamHandler, self).emit(record)
+            super().emit(record)
         finally:
             self.terminator = '\n'
             self.release()
@@ -182,7 +182,7 @@ class MemoryHandler(logging.handlers.BufferingHandler):
 
     def __init__(self):
         # type: () -> None
-        super(MemoryHandler, self).__init__(-1)
+        super().__init__(-1)
 
     def shouldFlush(self, record):
         # type: (logging.LogRecord) -> bool
@@ -385,7 +385,7 @@ class WarningSuppressor(logging.Filter):
     def __init__(self, app):
         # type: (Sphinx) -> None
         self.app = app
-        super(WarningSuppressor, self).__init__()
+        super().__init__()
 
     def filter(self, record):
         # type: (logging.LogRecord) -> bool
@@ -411,7 +411,7 @@ class WarningIsErrorFilter(logging.Filter):
     def __init__(self, app):
         # type: (Sphinx) -> None
         self.app = app
-        super(WarningIsErrorFilter, self).__init__()
+        super().__init__()
 
     def filter(self, record):
         # type: (logging.LogRecord) -> bool
@@ -448,7 +448,7 @@ class MessagePrefixFilter(logging.Filter):
     def __init__(self, prefix):
         # type: (str) -> None
         self.prefix = prefix
-        super(MessagePrefixFilter, self).__init__()
+        super().__init__()
 
     def filter(self, record):
         # type: (logging.LogRecord) -> bool
@@ -468,7 +468,7 @@ class SphinxLogRecordTranslator(logging.Filter):
     def __init__(self, app):
         # type: (Sphinx) -> None
         self.app = app
-        super(SphinxLogRecordTranslator, self).__init__()
+        super().__init__()
 
     def filter(self, record):  # type: ignore
         # type: (SphinxWarningLogRecord) -> bool
@@ -519,7 +519,7 @@ def get_node_location(node):
 class ColorizeFormatter(logging.Formatter):
     def format(self, record):
         # type: (logging.LogRecord) -> str
-        message = super(ColorizeFormatter, self).format(record)
+        message = super().format(record)
         color = getattr(record, 'color', None)
         if color is None:
             color = COLOR_MAP.get(record.levelno)
diff --git a/sphinx/util/stemmer/__init__.py b/sphinx/util/stemmer/__init__.py
index 04b37709c..486d86231 100644
--- a/sphinx/util/stemmer/__init__.py
+++ b/sphinx/util/stemmer/__init__.py
@@ -40,7 +40,7 @@ class StandardStemmer(PorterStemmer, BaseStemmer):  # type: ignore
     """
     def stem(self, word):  # type: ignore
         # type: (str) -> str
-        return super(StandardStemmer, self).stem(word, 0, len(word) - 1)
+        return super().stem(word, 0, len(word) - 1)
 
 
 def get_stemmer():
diff --git a/sphinx/util/template.py b/sphinx/util/template.py
index 49afc2df2..7c98654ed 100644
--- a/sphinx/util/template.py
+++ b/sphinx/util/template.py
@@ -44,7 +44,7 @@ class FileRenderer(BaseRenderer):
     def __init__(self, search_path):
         # type: (str) -> None
         loader = SphinxFileSystemLoader(search_path)
-        super(FileRenderer, self).__init__(loader)
+        super().__init__(loader)
 
     @classmethod
     def render_from_file(cls, filename, context):
@@ -59,7 +59,7 @@ class SphinxRenderer(FileRenderer):
         # type: (str) -> None
         if template_path is None:
             template_path = os.path.join(package_dir, 'templates')
-        super(SphinxRenderer, self).__init__(template_path)
+        super().__init__(template_path)
 
     @classmethod
     def render_from_file(cls, filename, context):
@@ -71,7 +71,7 @@ class LaTeXRenderer(SphinxRenderer):
     def __init__(self):
         # type: () -> None
         template_path = os.path.join(package_dir, 'templates', 'latex')
-        super(LaTeXRenderer, self).__init__(template_path)
+        super().__init__(template_path)
 
         # use texescape as escape filter
         self.env.filters['e'] = texescape.escape
diff --git a/sphinx/writers/html.py b/sphinx/writers/html.py
index 80a06cc26..7ab84fb35 100644
--- a/sphinx/writers/html.py
+++ b/sphinx/writers/html.py
@@ -48,7 +48,7 @@ class HTMLWriter(Writer):
 
     def __init__(self, builder):
         # type: (StandaloneHTMLBuilder) -> None
-        super(HTMLWriter, self).__init__()
+        super().__init__()
         self.builder = builder
 
     def translate(self):
@@ -76,7 +76,7 @@ class HTMLTranslator(SphinxTranslator, BaseTranslator):
 
     def __init__(self, builder, document):
         # type: (StandaloneHTMLBuilder, nodes.document) -> None
-        super(HTMLTranslator, self).__init__(builder, document)
+        super().__init__(builder, document)
         self.highlighter = self.builder.highlighter
         self.docnames = [self.builder.current_docname]  # for singlehtml builder
         self.manpages_url = self.config.manpages_url
@@ -377,18 +377,18 @@ class HTMLTranslator(SphinxTranslator, BaseTranslator):
             # avoid emitting empty <ul></ul>
             raise nodes.SkipNode
         self.generate_targets_for_listing(node)
-        super(HTMLTranslator, self).visit_bullet_list(node)
+        super().visit_bullet_list(node)
 
     # overwritten
     def visit_enumerated_list(self, node):
         # type: (nodes.Element) -> None
         self.generate_targets_for_listing(node)
-        super(HTMLTranslator, self).visit_enumerated_list(node)
+        super().visit_enumerated_list(node)
 
     # overwritten
     def visit_title(self, node):
         # type: (nodes.Element) -> None
-        super(HTMLTranslator, self).visit_title(node)
+        super().visit_title(node)
         self.add_secnumber(node)
         self.add_fignumber(node.parent)
         if isinstance(node.parent, nodes.table):
@@ -414,14 +414,14 @@ class HTMLTranslator(SphinxTranslator, BaseTranslator):
         elif isinstance(node.parent, nodes.table):
             self.body.append('</span>')
 
-        super(HTMLTranslator, self).depart_title(node)
+        super().depart_title(node)
 
     # overwritten
     def visit_literal_block(self, node):
         # type: (nodes.Element) -> None
         if node.rawsource != node.astext():
             # most probably a parsed-literal block -- don't highlight
-            return super(HTMLTranslator, self).visit_literal_block(node)
+            return super().visit_literal_block(node)
 
         lang = node.get('language', 'default')
         linenos = node.get('linenos', False)
@@ -447,7 +447,7 @@ class HTMLTranslator(SphinxTranslator, BaseTranslator):
         if isinstance(node.parent, nodes.container) and node.parent.get('literal_block'):
             self.body.append('<div class="code-block-caption">')
         else:
-            super(HTMLTranslator, self).visit_caption(node)
+            super().visit_caption(node)
         self.add_fignumber(node.parent)
         self.body.append(self.starttag(node, 'span', '', CLASS='caption-text'))
 
@@ -468,7 +468,7 @@ class HTMLTranslator(SphinxTranslator, BaseTranslator):
         if isinstance(node.parent, nodes.container) and node.parent.get('literal_block'):
             self.body.append('</div>\n')
         else:
-            super(HTMLTranslator, self).depart_caption(node)
+            super().depart_caption(node)
 
     def visit_doctest_block(self, node):
         # type: (nodes.Element) -> None
@@ -554,7 +554,7 @@ class HTMLTranslator(SphinxTranslator, BaseTranslator):
         if isinstance(node.parent, addnodes.versionmodified):
             # Never compact versionmodified nodes.
             return False
-        return super(HTMLTranslator, self).should_be_compact_paragraph(node)
+        return super().should_be_compact_paragraph(node)
 
     def visit_compact_paragraph(self, node):
         # type: (nodes.Element) -> None
@@ -628,7 +628,7 @@ class HTMLTranslator(SphinxTranslator, BaseTranslator):
                         node['width'] = str(size[0])
                     if 'height' not in node:
                         node['height'] = str(size[1])
-        super(HTMLTranslator, self).visit_image(node)
+        super().visit_image(node)
 
     # overwritten
     def depart_image(self, node):
@@ -636,7 +636,7 @@ class HTMLTranslator(SphinxTranslator, BaseTranslator):
         if node['uri'].lower().endswith(('svg', 'svgz')):
             self.body.append(self.context.pop())
         else:
-            super(HTMLTranslator, self).depart_image(node)
+            super().depart_image(node)
 
     def visit_toctree(self, node):
         # type: (nodes.Element) -> None
@@ -686,7 +686,7 @@ class HTMLTranslator(SphinxTranslator, BaseTranslator):
 
     def visit_option_group(self, node):
         # type: (nodes.Element) -> None
-        super(HTMLTranslator, self).visit_option_group(node)
+        super().visit_option_group(node)
         self.context[-2] = self.context[-2].replace('&nbsp;', '&#160;')
 
     # overwritten
@@ -829,7 +829,7 @@ class HTMLTranslator(SphinxTranslator, BaseTranslator):
     def visit_table(self, node):
         # type: (nodes.Element) -> None
         self._table_row_index = 0
-        return super(HTMLTranslator, self).visit_table(node)
+        return super().visit_table(node)
 
     def visit_row(self, node):
         # type: (nodes.Element) -> None
@@ -843,14 +843,14 @@ class HTMLTranslator(SphinxTranslator, BaseTranslator):
 
     def visit_entry(self, node):
         # type: (nodes.Element) -> None
-        super(HTMLTranslator, self).visit_entry(node)
+        super().visit_entry(node)
         if self.body[-1] == '&nbsp;':
             self.body[-1] = '&#160;'
 
     def visit_field_list(self, node):
         # type: (nodes.Element) -> None
         self._fieldlist_row_index = 0
-        return super(HTMLTranslator, self).visit_field_list(node)
+        return super().visit_field_list(node)
 
     def visit_field(self, node):
         # type: (nodes.Element) -> None
@@ -864,7 +864,7 @@ class HTMLTranslator(SphinxTranslator, BaseTranslator):
     def visit_field_name(self, node):
         # type: (nodes.Element) -> None
         context_count = len(self.context)
-        super(HTMLTranslator, self).visit_field_name(node)
+        super().visit_field_name(node)
         if context_count != len(self.context):
             self.context[-1] = self.context[-1].replace('&nbsp;', '&#160;')
 
diff --git a/sphinx/writers/html5.py b/sphinx/writers/html5.py
index 7385c14d6..288954493 100644
--- a/sphinx/writers/html5.py
+++ b/sphinx/writers/html5.py
@@ -46,7 +46,7 @@ class HTML5Translator(SphinxTranslator, BaseTranslator):
 
     def __init__(self, builder, document):
         # type: (StandaloneHTMLBuilder, nodes.document) -> None
-        super(HTML5Translator, self).__init__(builder, document)
+        super().__init__(builder, document)
         self.highlighter = self.builder.highlighter
         self.docnames = [self.builder.current_docname]  # for singlehtml builder
         self.manpages_url = self.config.manpages_url
@@ -329,12 +329,12 @@ class HTML5Translator(SphinxTranslator, BaseTranslator):
         if len(node) == 1 and isinstance(node[0], addnodes.toctree):
             # avoid emitting empty <ul></ul>
             raise nodes.SkipNode
-        super(HTML5Translator, self).visit_bullet_list(node)
+        super().visit_bullet_list(node)
 
     # overwritten
     def visit_title(self, node):
         # type: (nodes.Element) -> None
-        super(HTML5Translator, self).visit_title(node)
+        super().visit_title(node)
         self.add_secnumber(node)
         self.add_fignumber(node.parent)
         if isinstance(node.parent, nodes.table):
@@ -360,14 +360,14 @@ class HTML5Translator(SphinxTranslator, BaseTranslator):
         elif isinstance(node.parent, nodes.table):
             self.body.append('</span>')
 
-        super(HTML5Translator, self).depart_title(node)
+        super().depart_title(node)
 
     # overwritten
     def visit_literal_block(self, node):
         # type: (nodes.Element) -> None
         if node.rawsource != node.astext():
             # most probably a parsed-literal block -- don't highlight
-            return super(HTML5Translator, self).visit_literal_block(node)
+            return super().visit_literal_block(node)
 
         lang = node.get('language', 'default')
         linenos = node.get('linenos', False)
@@ -393,7 +393,7 @@ class HTML5Translator(SphinxTranslator, BaseTranslator):
         if isinstance(node.parent, nodes.container) and node.parent.get('literal_block'):
             self.body.append('<div class="code-block-caption">')
         else:
-            super(HTML5Translator, self).visit_caption(node)
+            super().visit_caption(node)
         self.add_fignumber(node.parent)
         self.body.append(self.starttag(node, 'span', '', CLASS='caption-text'))
 
@@ -414,7 +414,7 @@ class HTML5Translator(SphinxTranslator, BaseTranslator):
         if isinstance(node.parent, nodes.container) and node.parent.get('literal_block'):
             self.body.append('</div>\n')
         else:
-            super(HTML5Translator, self).depart_caption(node)
+            super().depart_caption(node)
 
     def visit_doctest_block(self, node):
         # type: (nodes.Element) -> None
@@ -562,7 +562,7 @@ class HTML5Translator(SphinxTranslator, BaseTranslator):
                         node['width'] = str(size[0])
                     if 'height' not in node:
                         node['height'] = str(size[1])
-        super(HTML5Translator, self).visit_image(node)
+        super().visit_image(node)
 
     # overwritten
     def depart_image(self, node):
@@ -570,7 +570,7 @@ class HTML5Translator(SphinxTranslator, BaseTranslator):
         if node['uri'].lower().endswith(('svg', 'svgz')):
             self.body.append(self.context.pop())
         else:
-            super(HTML5Translator, self).depart_image(node)
+            super().depart_image(node)
 
     def visit_toctree(self, node):
         # type: (nodes.Element) -> None
@@ -795,7 +795,7 @@ class HTML5Translator(SphinxTranslator, BaseTranslator):
     def visit_field_list(self, node):
         # type: (nodes.Element) -> None
         self._fieldlist_row_index = 0
-        return super(HTML5Translator, self).visit_field_list(node)
+        return super().visit_field_list(node)
 
     def visit_field(self, node):
         # type: (nodes.Element) -> None
diff --git a/sphinx/writers/latex.py b/sphinx/writers/latex.py
index 065e0bf5a..0f11e9779 100644
--- a/sphinx/writers/latex.py
+++ b/sphinx/writers/latex.py
@@ -249,7 +249,7 @@ class LaTeXWriter(writers.Writer):
 
     def __init__(self, builder):
         # type: (LaTeXBuilder) -> None
-        super(LaTeXWriter, self).__init__()
+        super().__init__()
         self.builder = builder
 
     def translate(self):
@@ -269,7 +269,7 @@ class ExtBabel(Babel):
         self.language_code = language_code
         self.use_polyglossia = use_polyglossia
         self.supported = True
-        super(ExtBabel, self).__init__(language_code or '')
+        super().__init__(language_code or '')
 
     def get_shorthandoff(self):
         # type: () -> str
@@ -287,7 +287,7 @@ class ExtBabel(Babel):
 
     def language_name(self, language_code):
         # type: (str) -> str
-        language = super(ExtBabel, self).language_name(language_code)
+        language = super().language_name(language_code)
         if language == 'ngerman' and self.use_polyglossia:
             # polyglossia calls new orthography (Neue Rechtschreibung) as
             # german (with new spelling option).
@@ -304,7 +304,7 @@ class ExtBabel(Babel):
         if self.use_polyglossia is False:
             return None
         elif self.language == 'german':
-            language = super(ExtBabel, self).language_name(self.language_code)
+            language = super().language_name(self.language_code)
             if language == 'ngerman':
                 return 'spelling=new'
             else:
@@ -508,7 +508,7 @@ class LaTeXTranslator(SphinxTranslator):
 
     def __init__(self, document, builder):
         # type: (nodes.document, LaTeXBuilder) -> None
-        super(LaTeXTranslator, self).__init__(builder, document)
+        super().__init__(builder, document)
         self.body = []  # type: List[str]
 
         # flags
diff --git a/sphinx/writers/manpage.py b/sphinx/writers/manpage.py
index 1b7e85928..91d040a03 100644
--- a/sphinx/writers/manpage.py
+++ b/sphinx/writers/manpage.py
@@ -35,7 +35,7 @@ logger = logging.getLogger(__name__)
 class ManualPageWriter(Writer):
     def __init__(self, builder):
         # type: (Builder) -> None
-        super(ManualPageWriter, self).__init__()
+        super().__init__()
         self.builder = builder
 
     def translate(self):
@@ -87,7 +87,7 @@ class ManualPageTranslator(SphinxTranslator, BaseTranslator):
 
     def __init__(self, builder, document):
         # type: (Builder, nodes.document) -> None
-        super(ManualPageTranslator, self).__init__(builder, document)
+        super().__init__(builder, document)
 
         self.in_productionlist = 0
 
@@ -249,7 +249,7 @@ class ManualPageTranslator(SphinxTranslator, BaseTranslator):
         if node.traverse(nodes.strong):
             self.body.append('\n')
         else:
-            super(ManualPageTranslator, self).visit_term(node)
+            super().visit_term(node)
 
     # overwritten -- we don't want source comments to show up
     def visit_comment(self, node):  # type: ignore
@@ -260,7 +260,7 @@ class ManualPageTranslator(SphinxTranslator, BaseTranslator):
     def visit_footnote(self, node):
         # type: (nodes.Element) -> None
         self.ensure_eol()
-        super(ManualPageTranslator, self).visit_footnote(node)
+        super().visit_footnote(node)
 
     # overwritten -- handle footnotes rubric
     def visit_rubric(self, node):
@@ -473,14 +473,14 @@ class ManualPageTranslator(SphinxTranslator, BaseTranslator):
                 self.body.append('.SH %s\n' %
                                  self.deunicode(node.astext().upper()))
                 raise nodes.SkipNode
-        return super(ManualPageTranslator, self).visit_title(node)
+        return super().visit_title(node)
 
     def depart_title(self, node):
         # type: (nodes.Element) -> None
         if isinstance(node.parent, addnodes.seealso):
             self.body.append('"\n')
             return
-        return super(ManualPageTranslator, self).depart_title(node)
+        return super().depart_title(node)
 
     def visit_raw(self, node):
         # type: (nodes.Element) -> None
diff --git a/sphinx/writers/texinfo.py b/sphinx/writers/texinfo.py
index b9b7cabfe..55bf1854e 100644
--- a/sphinx/writers/texinfo.py
+++ b/sphinx/writers/texinfo.py
@@ -134,7 +134,7 @@ class TexinfoWriter(writers.Writer):
 
     def __init__(self, builder):
         # type: (TexinfoBuilder) -> None
-        super(TexinfoWriter, self).__init__()
+        super().__init__()
         self.builder = builder
 
     def translate(self):
@@ -169,7 +169,7 @@ class TexinfoTranslator(SphinxTranslator):
 
     def __init__(self, document, builder):
         # type: (nodes.document, TexinfoBuilder) -> None
-        super(TexinfoTranslator, self).__init__(builder, document)
+        super().__init__(builder, document)
         self.init_settings()
 
         self.written_ids = set()        # type: Set[str]
diff --git a/sphinx/writers/text.py b/sphinx/writers/text.py
index 1815e18fb..cff7b517d 100644
--- a/sphinx/writers/text.py
+++ b/sphinx/writers/text.py
@@ -382,7 +382,7 @@ class TextWriter(writers.Writer):
 
     def __init__(self, builder):
         # type: (TextBuilder) -> None
-        super(TextWriter, self).__init__()
+        super().__init__()
         self.builder = builder
 
     def translate(self):
@@ -397,7 +397,7 @@ class TextTranslator(SphinxTranslator):
 
     def __init__(self, document, builder):
         # type: (nodes.document, TextBuilder) -> None
-        super(TextTranslator, self).__init__(builder, document)
+        super().__init__(builder, document)
 
         newlines = self.config.text_newlines
         if newlines == 'windows':
diff --git a/sphinx/writers/xml.py b/sphinx/writers/xml.py
index 85ca083a7..23e99c2e3 100644
--- a/sphinx/writers/xml.py
+++ b/sphinx/writers/xml.py
@@ -21,7 +21,7 @@ class XMLWriter(BaseXMLWriter):
 
     def __init__(self, builder):
         # type: (Builder) -> None
-        super(XMLWriter, self).__init__()
+        super().__init__()
         self.builder = builder
         self.translator_class = self.builder.get_translator_class()
 
@@ -32,7 +32,7 @@ class XMLWriter(BaseXMLWriter):
             self.builder.env.config.xml_pretty
         self.document.settings.xml_declaration = True
         self.document.settings.doctype_declaration = True
-        return super(XMLWriter, self).translate()
+        return super().translate()
 
 
 class PseudoXMLWriter(BaseXMLWriter):
@@ -48,7 +48,7 @@ class PseudoXMLWriter(BaseXMLWriter):
 
     def __init__(self, builder):
         # type: (Builder) -> None
-        super(PseudoXMLWriter, self).__init__()
+        super().__init__()
         self.builder = builder
 
     def translate(self):
diff --git a/tests/test_util_fileutil.py b/tests/test_util_fileutil.py
index 11f40ad78..e27132069 100644
--- a/tests/test_util_fileutil.py
+++ b/tests/test_util_fileutil.py
@@ -17,7 +17,7 @@ from sphinx.util.fileutil import copy_asset, copy_asset_file
 
 class DummyTemplateLoader(BuiltinTemplateLoader):
     def __init__(self):
-        super(DummyTemplateLoader, self).__init__()
+        super().__init__()
         builder = mock.Mock()
         builder.config.templates_path = []
         builder.app.translater = None