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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 most_significant_bit(lst: np.ndarray) -> int: """ A helper function that finds the position of the most significant bit in a 1darray of 1s and 0s, i.e. the first position where a 1 appears, reading left to right. :param lst: a 1d array of 0s and 1s with at least one 1 :return: the first position in lst that a 1 appears """

    return np.argwhere(np.asarray(lst) == 1)[0][0]