Python Lint

**Is your feature request related to a problem? Please describe.**
The code need lint.

**Describe the solution you'd like**
- Pytest
- flake8
- Pylint
- tox
- doctest
- unittest
- pytest-capturelog
- pytest-xdist
- pytest-django
- pytest-twisted
- virtualenv
- sphinx
- sphinx-rtd-theme
- dist

**Describe alternatives you've considered**
Lint
