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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 invalid_marker(text):
 """ Validate text as a PEP 508 environment marker; return an exception if invalid or False otherwise. """

    try:
        evaluate_marker(text)
    except SyntaxError as e:
        e.filename = None
        e.lineno = None
        return e
    return False