remove deprecated imp, fix docstring warning #1331
Merged
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imp is deprecated in Python 12. This was only used in one function which I replaced with the equivalent function found in the types module.
Also, the docstrings that contained backslashes were causing a warning to be called every time that was imported. These were probably intended for latex formatting, but Python reads them differently. I turned those into literal docstrings so that the Python interpretation of escape sequences was ignored, which stopped the warnings.