import audiodiff
print audiodiff.audio_equal('output1.wav', 'output2.wav', ffmpeg_bin=None)

File "/usr/local/lib/python2.7/dist-packages/audiodiff/__init__.py", line 51, in audio_equal
return checksum(name1, ffmpeg_bin) == checksum(name2, ffmpeg_bin)
File "/usr/local/lib/python2.7/dist-packages/audiodiff/__init__.py", line 86, in checksum
stderr=subprocess.PIPE)
File "/usr/lib/python2.7/subprocess.py", line 710, in __init__
errread, errwrite)
File "/usr/lib/python2.7/subprocess.py", line 1327, in _execute_child
raise child_exception