How to use 'shuffle dataframe' in Python

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def shuffleDataFrame(df):
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    """ Shuffles the rows of a dataframe """
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    df.reset_index(inplace=True)
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    del df['index']
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    return df.reindex(np.random.permutation(df.index))

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def shuffle(df, n=1):
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    ind = df.index
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    sampler = np.random.permutation
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    for i in range(n):
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        new_vals = df.take(sampler(df.shape[0])).values
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        df = pd.DataFrame(new_vals, index=ind)
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    return df