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, 9 insertions, 5 deletions

diff --git a/plugins/ext_test/tasks.py b/plugins/ext_test/tasks.py
index f23faa69..757dfe79 100644
--- a/plugins/ext_test/tasks.py
+++ b/plugins/ext_test/tasks.py
@@ -57,7 +57,7 @@ def pytest(context, junit=False, pty=True, append_cov=False):
             command_str += ' --cov-append'
         if junit:
             command_str += ' --junitxml=junit/test-results.xml'
-        command_str += ' ' + str((TASK_ROOT/'tests').relative_to(ROOT_PATH))
+        command_str += ' ' + str((TASK_ROOT / 'tests').relative_to(ROOT_PATH))
         context.run(command_str, pty=pty)
 
 
@@ -71,8 +71,8 @@ def pytest_clean(context):
     with context.cd(TASK_ROOT_STR):
         dirs = ['.pytest_cache', '.cache', 'htmlcov', '.coverage']
         rmrf(dirs)
-        
-        
+
+
 namespace_clean.add_task(pytest_clean, 'pytest')
 
 
@@ -140,6 +140,8 @@ namespace_clean.add_task(dist_clean, 'dist')
 #
 # make a dummy clean task which runs all the tasks in the clean namespace
 clean_tasks = list(namespace_clean.tasks.values())
+
+
 @invoke.task(pre=list(namespace_clean.tasks.values()), default=True)
 def clean_all(context):
     """Run all clean tasks"""
@@ -195,8 +197,10 @@ namespace.add_task(pypi_test)
 def flake8(context):
     """Run flake8 linter and tool for style guide enforcement"""
     with context.cd(TASK_ROOT_STR):
-        context.run("flake8 --ignore=E252,W503 --max-complexity=26 --max-line-length=127 --show-source --statistics "
-                    "--exclude=.git,__pycache__,.tox,.nox,.eggs,*.egg,.venv,.idea,.pytest_cache,.vscode,build,dist,htmlcov")
+        context.run(
+            "flake8 --ignore=E252,W503 --max-complexity=26 --max-line-length=127 --show-source --statistics "
+            "--exclude=.git,__pycache__,.tox,.nox,.eggs,*.egg,.venv,.idea,.pytest_cache,.vscode,build,dist,htmlcov"
+        )
 
 
 namespace.add_task(flake8)