Adds pre-commit config to run various lintersci_improvements

This ads black, isort, pyupgrade, and flake8 to pre-commit-config.yaml
There are also some small changes to travis.yml and tasks.py to reduce
some repeated configurations that should be consolidated into
setup.cfg. Most other changes are automated by the linter scripts.

1 files changed, 5 insertions, 9 deletions

diff --git a/tests/conftest.py b/tests/conftest.py
index 73080b5c..1116539d 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -25,9 +25,9 @@ except ImportError:
         pass
 
 
-def verify_help_text(cmd2_app: cmd2.Cmd,
-                     help_output: Union[str, List[str]],
-                     verbose_strings: Optional[List[str]] = None) -> None:
+def verify_help_text(
+    cmd2_app: cmd2.Cmd, help_output: Union[str, List[str]], verbose_strings: Optional[List[str]] = None
+) -> None:
     """This function verifies that all expected commands are present in the help text.
 
     :param cmd2_app: instance of cmd2.Cmd
@@ -158,12 +158,7 @@ def base_app():
 
 
 # These are odd file names for testing quoting of them
-odd_file_names = [
-    'nothingweird',
-    'has   spaces',
-    '"is_double_quoted"',
-    "'is_single_quoted'"
-]
+odd_file_names = ['nothingweird', 'has   spaces', '"is_double_quoted"', "'is_single_quoted'"]
 
 
 def complete_tester(text: str, line: str, begidx: int, endidx: int, app) -> Optional[str]:
@@ -182,6 +177,7 @@ def complete_tester(text: str, line: str, begidx: int, endidx: int, app) -> Opti
              Matches are stored in app.completion_matches
              These matches also have been sorted by complete()
     """
+
     def get_line():
         return line