message: pylint: Disable more warnings.
  Pylint is oblivious of the potential side effects of `a << b`
  statements.
diff: [MESSAGES CONTROL]
  - disable=abstract-method, broad-except, no-else-return, no-self-use, redefined-outer-name
  + disable=abstract-method, broad-except, no-else-return, no-self-use, redefined-outer-name, expression-not-assigned, pointless-statement
  [FORMAT]
  indent-string=' '
  