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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 bundle_dir():
 """Handle resource management within an executable file."""

    if frozen():
        directory = sys._MEIPASS
    else:
        directory = os.path.dirname(os.path.abspath(stack()[1][1]))
    if os.path.exists(directory):
        return directory