Flake8 style improvements

4 files changed, 27 insertions, 28 deletions

diff --git a/rdflib/namespace/__init__.py b/rdflib/namespace/__init__.py
index 0487a55d..68bc1726 100644
--- a/rdflib/namespace/__init__.py
+++ b/rdflib/namespace/__init__.py
@@ -81,7 +81,6 @@ The following namespaces are available by directly importing from rdflib:
 
 __all__ = ["is_ncname", "split_uri", "Namespace", "ClosedNamespace", "NamespaceManager"]
 
-
 logger = logging.getLogger(__name__)
 
 
@@ -192,7 +191,7 @@ class DefinedNamespaceMeta(type):
         name = str(name)
         if str(name).startswith("__"):
             return super().__getitem__(name, default)
-        if (cls._warn or cls._fail) and not name in cls:
+        if (cls._warn or cls._fail) and name not in cls:
             if cls._fail:
                 raise AttributeError(f"term '{name}' not in namespace '{cls._NS}'")
             else:
@@ -220,7 +219,7 @@ class DefinedNamespaceMeta(type):
         if item_str.startswith("__"):
             return super().__contains__(item)
         if item_str.startswith(str(cls._NS)):
-            item_str = item_str[len(str(cls._NS)) :]
+            item_str = item_str[len(str(cls._NS)):]
         return any(
             item_str in c.__annotations__
             or item_str in c._extras
@@ -419,7 +418,7 @@ class NamespaceManager(object):
                 pl_namespace = get_longest_namespace(self.__strie[namespace], uri)
                 if pl_namespace is not None:
                     namespace = pl_namespace
-                    name = uri[len(namespace) :]
+                    name = uri[len(namespace):]
 
             namespace = URIRef(namespace)
             prefix = self.store.prefix(namespace)  # warning multiple prefixes problem
diff --git a/rdflib/plugins/parsers/notation3.py b/rdflib/plugins/parsers/notation3.py
index cfdc8568..df2e8758 100755
--- a/rdflib/plugins/parsers/notation3.py
+++ b/rdflib/plugins/parsers/notation3.py
@@ -143,7 +143,7 @@ def join(here, there):
             "colon - with relative '%s'." % (here, there)
         )
 
-    if here[bcolonl + 1 : bcolonl + 3] == "//":
+    if here[bcolonl + 1: bcolonl + 3] == "//":
         bpath = here.find("/", bcolonl + 3)
     else:
         bpath = bcolonl + 1
@@ -530,7 +530,7 @@ class SinkParser:
         assert tok[0] not in _notNameChars  # not for punctuation
 
         len_tok = len(tok)
-        if argstr[i : i + len_tok].lower() == tok.lower() and (
+        if argstr[i: i + len_tok].lower() == tok.lower() and (
             argstr[i + len_tok] in _notQNameChars
         ):
             i += len_tok
@@ -798,7 +798,7 @@ class SinkParser:
             res.append(("->", RDF_type))
             return j
 
-        if argstr[i : i + 2] == "<=":
+        if argstr[i: i + 2] == "<=":
             if self.turtle:
                 self.BadSyntax(argstr, i, "Found '<=' in Turtle mode. ")
 
@@ -814,7 +814,7 @@ class SinkParser:
             res.append(("->", DAML_sameAs))
             return i + 1
 
-        if argstr[i : i + 2] == ":=":
+        if argstr[i: i + 2] == ":=":
             if self.turtle:
                 self.BadSyntax(argstr, i, "Found ':=' in Turtle mode")
 
@@ -827,7 +827,7 @@ class SinkParser:
             res.append(("->", r[0]))
             return j
 
-        if argstr[i : i + 2] == ">-" or argstr[i : i + 2] == "<-":
+        if argstr[i: i + 2] == ">-" or argstr[i: i + 2] == "<-":
             self.BadSyntax(argstr, j, ">- ... -> syntax is obsolete.")
 
         return -1
@@ -945,7 +945,7 @@ class SinkParser:
                     i = self.skipSpace(argstr, j)
                     if i < 0:
                         self.BadSyntax(argstr, i, "needed '$}', found end.")
-                    if argstr[i : i + 2] == "$}":
+                    if argstr[i: i + 2] == "$}":
                         j = i + 2
                         break
 
@@ -1068,7 +1068,7 @@ class SinkParser:
                     break
                 i = j + 1
 
-            if argstr[j : j + 2] == ":-":
+            if argstr[j: j + 2] == ":-":
                 if self.turtle:
                     self.BadSyntax(argstr, j, "Found in ':-' in Turtle mode")
                 i = j + 2
@@ -1428,7 +1428,7 @@ class SinkParser:
             ch = argstr[i]
             if ch in self.string_delimiters:
                 ch_three = ch * 3
-                if argstr[i : i + 3] == ch_three:
+                if argstr[i: i + 3] == ch_three:
                     delim = ch_three
                     i += 3
                 else:
@@ -1478,7 +1478,7 @@ class SinkParser:
 
             ch_three = ch * 3
             if ch in self.string_delimiters:
-                if argstr[i : i + 3] == ch_three:
+                if argstr[i: i + 3] == ch_three:
                     delim = ch_three
                     i += 3
                 else:
@@ -1499,9 +1499,9 @@ class SinkParser:
                             "Bad language code syntax on string " + "literal, after @",
                         )
                     i = m.end()
-                    lang = argstr[j + 1 : i]
+                    lang = argstr[j + 1: i]
                     j = i
-                if argstr[j : j + 2] == "^^":
+                if argstr[j: j + 2] == "^^":
                     res2 = []
                     j = self.uri_ref2(argstr, j + 2, res2)  # Read datatype URI
                     dt = res2[0]
@@ -1535,15 +1535,15 @@ class SinkParser:
                 if (
                     delim == delim3
                 ):  # done when delim is """ or ''' and, respectively ...
-                    if argstr[j : j + 5] == delim5:  # ... we have "" or '' before
+                    if argstr[j: j + 5] == delim5:  # ... we have "" or '' before
                         i = j + 5
                         ustr += delim2
                         return i, ustr
-                    if argstr[j : j + 4] == delim4:  # ... we have " or ' before
+                    if argstr[j: j + 4] == delim4:  # ... we have " or ' before
                         i = j + 4
                         ustr += delim1
                         return i, ustr
-                    if argstr[j : j + 3] == delim3:  # current " or ' is part of delim
+                    if argstr[j: j + 3] == delim3:  # current " or ' is part of delim
                         i = j + 3
                         return i, ustr
 
@@ -1555,8 +1555,8 @@ class SinkParser:
             m = interesting.search(argstr, j)  # was argstr[j:].
             # Note for pos param to work, MUST be compiled  ... re bug?
             assert m, "Quote expected in string at ^ in %s^%s" % (
-                argstr[j - 20 : j],
-                argstr[j : j + 20],
+                argstr[j - 20: j],
+                argstr[j: j + 20],
             )  # at least need a quote
 
             i = m.start()
@@ -1633,7 +1633,7 @@ class SinkParser:
                 self._thisDoc, startline, argstr, i, "unterminated string literal(3)"
             )
         try:
-            return i + n, reg.sub(unicodeExpand, "\\" + prefix + argstr[i : i + n])
+            return i + n, reg.sub(unicodeExpand, "\\" + prefix + argstr[i: i + n])
         except:
             raise BadSyntax(
                 self._thisDoc,
@@ -1685,7 +1685,7 @@ class BadSyntax(SyntaxError):
             self._why,
             pre,
             argstr[st:i],
-            argstr[i : i + 60],
+            argstr[i: i + 60],
             post,
         )
 
diff --git a/rdflib/plugins/parsers/ntriples.py b/rdflib/plugins/parsers/ntriples.py
index a86bd66f..a5858bc2 100644
--- a/rdflib/plugins/parsers/ntriples.py
+++ b/rdflib/plugins/parsers/ntriples.py
@@ -65,7 +65,7 @@ def unquote(s):
         while s:
             m = r_safe.match(s)
             if m:
-                s = s[m.end() :]
+                s = s[m.end():]
                 result.append(m.group(1))
                 continue
 
@@ -77,7 +77,7 @@ def unquote(s):
 
             m = r_uniquot.match(s)
             if m:
-                s = s[m.end() :]
+                s = s[m.end():]
                 u, U = m.groups()
                 codepoint = int(u or U, 16)
                 if codepoint > 0x10FFFF:
@@ -224,7 +224,7 @@ class W3CNTriplesParser(object):
             # print(dir(pattern))
             # print repr(self.line), type(self.line)
             raise ParseError("Failed to eat %s at %s" % (pattern.pattern, self.line))
-        self.line = self.line[m.end() :]
+        self.line = self.line[m.end():]
         return m
 
     def subject(self, bnode_context=None):
diff --git a/rdflib/plugins/parsers/trig.py b/rdflib/plugins/parsers/trig.py
index 9caa0662..1addb747 100644
--- a/rdflib/plugins/parsers/trig.py
+++ b/rdflib/plugins/parsers/trig.py
@@ -80,7 +80,7 @@ class TrigSinkParser(SinkParser):
         if j < 0:
             self.BadSyntax(argstr, i, "EOF found when expected graph")
 
-        if argstr[j : j + 1] == "=":  # optional = for legacy support
+        if argstr[j: j + 1] == "=":  # optional = for legacy support
 
             i = self.skipSpace(argstr, j + 1)
             if i < 0:
@@ -88,7 +88,7 @@ class TrigSinkParser(SinkParser):
         else:
             i = j
 
-        if argstr[i : i + 1] != "{":
+        if argstr[i: i + 1] != "{":
             return -1  # the node wasn't part of a graph
 
         j = i + 1
@@ -104,7 +104,7 @@ class TrigSinkParser(SinkParser):
             if i < 0:
                 self.BadSyntax(argstr, i, "needed '}', found end.")
 
-            if argstr[i : i + 1] == "}":
+            if argstr[i: i + 1] == "}":
                 j = i + 1
                 break