The regex «[\+-]?[0-9]*» possibly matches a single minus/plus, which would then
be passed on to int(), raising a ValueError from within _safe_cast. The test
suite covered this for float, but not for int.
We now make sure we actually have a number after the sign by using a Kleene
plus.
Part of #1966. This also introduces a nicer, more lightweight way to create and
destroy temporary directories, decoupling that functionality from the
giant morass that is TestHelper.
This was a vestige from when we used to need the unittest2 library for pre-2.7
compatibility. Now that we require Python 2.7, we aren't using that library
and this indirection wasn't doing any good.
Instead of the individial mutagen format exceptions use the
mutagen.MutagenError exception introduced in 1.25.
Since 1.33 mutagen will only raise MutagenError for load/save/delete
and no longer raise IOError. Translate both errors to UnreadableFileError
to support older and newer mutagen versions. Unify error handling
in __init__(), save() and delete().
Since it's no longer possible to get an IOError from MediaFile, adjust
all callers and tests accordingly.
This was tested with mutagen 1.27 and current mutagen master.
This reverts commit 9c41c39913.
That commit used byte strings for the `if __name__ == '__main__'` pattern,
which was necessary when we were doing unicode_literals. But it is wrong on
Python 3, and now that we're liberated from unicode_literals, we need to go
back to native strings for this comparison.
Include import of __future__ features division, absolute_imports and
print_function everywhere. Don't add unicode_literals yet for it is
harder to convert.
Goal is smoothing the transition to python 3.
For #899, we need to change MediaFile's behavior (pre-write) based on whether
we're doing ID3v2.3 or not. So we need a field on the object, not a parameter
to `save()`.
