# coding:utf-8

borrowing_balance = float(input('请输入借款金额：'))  # 定义借款金额
staging_period = int(input('请选择分期期数3期/6期/12期：'))  # 定义还款期限
repayment_amount = '您每期的还款总额为:%s'
_repayment_amount = float()  # 定义每期还款总额变量
interest_rate3 = borrowing_balance * 0.025  # 定义3期总手续费
interest_rate6 = borrowing_balance * 0.045  # 定义6期总手续费
interest_rate12 = borrowing_balance * 0.088  # 定义12期总手续费
principal = borrowing_balance / staging_period  # 定义每期还款本金

if staging_period == 3:
    _repayment_amount = (interest_rate3 / 3) + principal
print(repayment_amount % ("%.2f" % _repayment_amount))
elif staging_period == 6:
    _repayment_amount = (interest_rate6 / 6) + principal
print(repayment_amount % ("%.2f" % _repayment_amount))
elif staging_period == 12:
    _repayment_amount = (interest_rate12 / 12) + principal
print(repayment_amount % ("%.2f" % _repayment_amount))
else:
print('您选择的期数不存在，请重新选择！')

​