reverseWavs.py

from os import listdir, getcwd
from pydub import AudioSegment
import re

def reverse_audio_files(audio_file):
    audio = AudioSegment.from_wav(audio_file)
    return audio.reverse()
        
cwd = getcwd()
dirlist = listdir(cwd);

wav_files = map(reverse_audio_files, filter(lambda file: file.endswith('.wav'), dirlist))
for index, audio in enumerate(wav_files):
    audio.export('exported %s.mp3' % index, format="mp3")