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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 chmod_plus(path, add_bits=stat.S_IWUSR):
 """Change a file's mode by adding a few bits. Like chmod +<bits> <path> in a Unix shell. """

    try:
        os.chmod(path, stat.S_IMODE(os.stat(path).st_mode) | add_bits)
    except OSError:  # pragma: nocover
        pass