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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def gzip_file(source, sink):
 """ Create a GZIP file from a source file. Parameters source : str Filepath sink : str Filepath """

    import gzip
    with open(source, 'rb') as f_in, gzip.open(sink, 'wb') as f_out:
        f_out.writelines(f_in)