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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 _append_path(new_path):
 # type: (str) -> None """ Given a path string, append it to sys.path """

    for path in sys.path:
        path = os.path.abspath(path)
        if new_path == path:
            return
    sys.path.append(new_path)