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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 bitlist_to_int(bitlist):
 """Convert a binary bitstring into the corresponding unsigned integer. :param list bitlist: A list of ones of zeros. :return: The corresponding integer. :rtype: int """


    ret = 0
    for b in bitlist:
        ret = (ret << 1) | (int(b) & 1)
    return ret