- Add pyproject.toml and tox.ini with consistent black and pycodestyle
settings.
+ Fix all errors >= E300.
- Place unconditional imports at the beginning of the file.
- Do not import more than one module at the same time.
- Do not use blackslash at EOL within brackets.
- Do not use bare except.
- Do not end statement with semicolon.
- Do not place multiple statements in the same line.
- Use «is» and «is not» instead of «==» and «!=» for None.
- Disambiguate short variable name by giving it a better longer name.
- Remove trailing whitespace.
- Fix expected number of blank lines.
Change-Id: I02a29887a1267f5b843822e0ff05b7dca4416554
Guillem Jover