Rudder

We have a ton of problems due to python lack of static checks. We have typos (), we have missing imports (#12633), and this has dire consequences in production.

For example, #12633 could have been avoided without any special configuration:

% sudo pacman -S python-pylint
...
% pylint --disable=I,R,C,W ncf                                                                                      [18-05-16 11:16:19]
No config file found, using default configuration
************* Module ncf
E: 62,87: Using variable 'technique' before assignment (used-before-assignment)
E: 71,23: Class 'traceback' has no 'format_exc' member (no-member)
E: 71,23: Undefined variable 'traceback' (undefined-variable)

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Your code has been rated at 7.79/10 (previous run: 7.79/10, +0.00)

We need to force use pylint in any python code before a release. The best place seems to be in CI. The ticket project should be changed if needed, depending on the implemented solution.