求python高手解决.Write a python program that letsthe user enter t

1个回答

  • 输入贷款总量和贷款年数,显示每个月的还款数额和总还款数额

    不是很理解"for each monthly interst rate starting from 4 to 8 in increments of 1",请解释

    先粘出来写了开头的代码:

    import os

    class LOAN_ERROR(Exception):

    def __init__(self, message):

    self._message = message

    def __str__(self):

    return self._message

    if __name__ == "__main__":

    try:

    total_loan_money = raw_input("loan amount: ")

    loan_period = raw_input("loan period (year): ")

    if not isinstance(loan_period, int) or loan_period < 0:

    raise LOAN_ERROR("Please provide a positive number.")