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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 get_gzipped_contents(input_file):
 """ Returns a gzipped version of a previously opened file's buffer. """

    zbuf = StringIO()
    zfile = GzipFile(mode="wb", compresslevel=6, fileobj=zbuf)
    zfile.write(input_file.read())
    zfile.close()
    return ContentFile(zbuf.getvalue())