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, 1 deletions

diff --git a/plugins/ext_test/tests/test_ext_test.py b/plugins/ext_test/tests/test_ext_test.py
index b1ba1b7d..52441340 100644
--- a/plugins/ext_test/tests/test_ext_test.py
+++ b/plugins/ext_test/tests/test_ext_test.py
@@ -1,9 +1,9 @@
 #
 # coding=utf-8
 
+import cmd2_ext_test
 import pytest
 
-import cmd2_ext_test
 from cmd2 import CommandResult, cmd2
 
 ######
@@ -17,6 +17,7 @@ OUT_MSG = 'this is the something command'
 
 class ExampleApp(cmd2.Cmd):
     """An class to show how to use a plugin"""
+
     def __init__(self, *args, **kwargs):
         # gotta have this or neither the plugin or cmd2 will initialize
         super().__init__(*args, **kwargs)
@@ -28,11 +29,13 @@ class ExampleApp(cmd2.Cmd):
 
 # Define a tester class that brings in the external test mixin
 
+
 class ExampleTester(cmd2_ext_test.ExternalTestMixin, ExampleApp):
     def __init__(self, *args, **kwargs):
         # gotta have this or neither the plugin or cmd2 will initialize
         super().__init__(*args, **kwargs)
 
+
 #
 # You can't use a fixture to instantiate your app if you want to use
 # to use the capsys fixture to capture the output. cmd2.Cmd sets
@@ -59,6 +62,7 @@ def example_app():
 #
 #####
 
+
 def test_something(example_app):
     # load our fixture
     # execute a command