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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 _default_warning_handler(library_msg, _):
 """Default warning handler callback."""

    library_msg = library_msg.decode('utf-8').rstrip()
    msg = "OpenJPEG library warning:  {0}".format(library_msg)
    warnings.warn(msg, UserWarning)