PR Summary

Currently, the TypeError thrown when an inappropriate type is passed to pyplot.close() has the following message:

TypeError: close() argument must be a Figure, an int, a string, or None, not '%s'

This is clearly a typo (introduced in f6bdcb5) as it says '%s' instead of telling the user the type that was passed in.

We update the raise statement to include the type so that pyplot.close(1.1) gives

TypeError: close() argument must be a Figure, an int, a string, or None, not <class 'float'>

instead of

TypeError: close() argument must be a Figure, an int, a string, or None, not '%s'

PR Checklist

• Has pytest style unit tests (and pytest passes).
• Is Flake 8 compliant (run flake8 on changed files to check).
• [N/A] New features are documented, with examples if plot related.
• [N/A] Documentation is sphinx and numpydoc compliant (the docs should build without error).
• Conforms to Matplotlib style conventions (install flake8-docstrings and run flake8 --docstring-convention=all).
• [N/A] New features have an entry in doc/users/next_whats_new/ (follow instructions in README.rst there).
• [N/A] API changes documented in doc/api/next_api_changes/ (follow instructions in README.rst there).