def my_func():
    import audioread
    import sounddevice as sd
    import struct
    import wave
    import contextlib
    import sys
    import glob
    from scipy.io import wavfile as wav
    import matplotlib.pyplot as plt
    import IPython.display as ipd
    import numpy as np
    import pandas as pd
    import librosa
    import wave
    from scipy.io import wavfile as wav
    from sklearn.externals import joblib
    from sklearn.ensemble import RandomForestClassifier
    from sklearn.decomposition import PCA
