Adding pre-commit

Introduced changes:
- pre-commit config and rules
- Add pre-commit to pep8 gate, Flake8 is covered in the pre-commit hooks.
- Applying fixes for pre-commit compliance in all code.

Also commit hash will be used instead of version tags in pre-commit to
prevend arbitrary code from running in developer's machines.

pre-commit will be used to:
- trailing whitespace;
- Replaces or checks mixed line ending (mixed-line-ending);
- Forbid files which have a UTF-8 byte-order marker (check-byte-order-marker);
- Checks that non-binary executables have a proper
  shebang (check-executables-have-shebangs);
- Check for files that contain merge conflict strings (check-merge-conflict);
- Check for debugger imports and py37+ breakpoint()
  calls in python source (debug-statements);
- Attempts to load all yaml files to verify syntax (check-yaml);
- Run flake8 checks (flake8) (local)

For further details about tests please refer to:
https://github.com/pre-commit/pre-commit-hooks

Change-Id: Ibd0c3d64fdc5c293d9d676d33eab828d9fde971f
Co-authored-by: Moisés Guimarães de Medeiros <moguimar@redhat.com>

1 files changed, 7 insertions, 2 deletions

diff --git a/tools/simulator.py b/tools/simulator.py
index ab2529b..8b37f50 100755
--- a/tools/simulator.py
+++ b/tools/simulator.py
@@ -1,3 +1,4 @@
+#!/usr/bin/env python3
 #    Licensed under the Apache License, Version 2.0 (the "License"); you may
 #    not use this file except in compliance with the License. You may obtain
 #    a copy of the License at
@@ -10,8 +11,12 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import eventlet  # noqa
-eventlet.monkey_patch()  # noqa
+try:
+    # Avoid https://github.com/PyCQA/pycodestyle/issues/472
+    import eventlet
+    eventlet.monkey_patch()
+except ImportError:
+    raise
 
 import argparse
 import bisect