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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 init(args=None):
 """Initialize the rabit library with arguments"""

    if args is None:
        args = []
    arr = (ctypes.c_char_p * len(args))()
    arr[:] = args
    _LIB.RabitInit(len(arr), arr)