Check for file handles in audio.signal.load_audio_file

[flokadillo]

audio.signal.load_audio_file(filename, ...) checks if the input is a filehandle using if not isinstance(filename, str). However, if filename is represented as type unicode, this condition is true as well and we therefore conclude that the variable is a file handle and try to close the file, which results in an error.
Therefore, I suggest it would be safer to check for file handles using
if hasattr(filename, 'read') or if isinstance(filename, file).

[superbock]

You have to be careful, Python 3 does not have a unicode type, just str. Maybe just use try/except.