In case of ValueError caused by user given input, raw string will be displayed in Error Message.
Example:

raise ValueError(
                        f"'c' argument must be a color, a sequence of colors, "
                        f"or a sequence of numbers, not {c!r}")

PR Summary

PR Checklist

Tests and Styling

• [N/A ] Has pytest style unit tests (and pytest passes).
• [N/A ] Is Flake 8 compliant (install flake8-docstrings and run flake8 --docstring-convention=all).

Documentation

• [ N/A] New features are documented, with examples if plot related.
• [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).
• [ N/A] Documentation is sphinx and numpydoc compliant (the docs should build without error).