https://github.com/asottile/pyupgrade > A tool to automatically upgrade syntax for newer versions of the > language. - Drop u str prefix - Drop base object inheritance - Drop args to super() - Use set literals - Use dict comprehension - Use set comprehension
So far, ``Builder.build_specific()`` accpets filnames without file extension. On the other hand, ``sphinx-build`` command does not accept such files. So the special handling code is only working for 3rd party applications. The behavior is not consistent. In addition, that is not helpful for users. This removes such behavior from builders. This does not change Sphinx application itself. It only effects to the applications which uses the API directly.
In Python 3, the default encoding of source files is utf-8. The encoding cookie is now unnecessary and redundant so remove it. For more details, see the docs: https://docs.python.org/3/howto/unicode.html#the-string-type > The default encoding for Python source code is UTF-8, so you can > simply include a Unicode character in a string literal ... Includes a fix for the flake8 header checks to stop expecting an encoding cookie.