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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_classpath():
 """Extract CLASSPATH from system environment as JPype doesn't seem to respect that variable. """

    try:
        orig_cp = os.environ['CLASSPATH']
    except KeyError:
        return []
    expanded_cp = []
    for i in orig_cp.split(os.path.pathsep):
        expanded_cp.extend(_jar_glob(i))
    return expanded_cp