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The imp.load_dynamic() function is used by third party code (e.g. Cython's pyximport) but is not currently documented.
http://docs.python.org/dev/library/imp.html
The latest changes to the import mechanism suggest that it should better be documented to give a hint that users can rely on it.

This is essentially a duplicate of issue 14551, but perhaps with a bit more weight behind it.

Ok, let's redocument them, then :)

Yeah, they really need to be documented in order for us to document them as deprecated if we decide we really want to remove them later. "Obsolete" is not, I think, the same as "deprecated".

I'm fine w/ documenting load_dynamic() and leaving it as-is since importlib uses the function itself (plus the frozen/builtin functions, although the frozen stuff might be simplified since they can probably just return the bytes for the frozen module instead of doing as much work in C code). But load_package(), load_source(), and load_module() need to go.

The imp module has been deprecated long time ago and the importlib module itself doesn't it anymore. However, Cython still use it: https://github.com/cython/cython/blob/master/pyximport/pyximport.py#L217
I'm inclined to close this as 'out of date' but feel free to reopen it :)