python-3.5 - 如何为我的程序创建表函数？

Question

我想做一个从代码中提取数据并从中创建表的函数：

 if mode_choice ==1 or 2:
    def main():
        pv= float(input("Enter the principle amount: "))
        interest = float(input("Enter the interest rate (in perecent): "))
        term = int(input("Enter the term (in months): "))
        interest = interest / 12 / 100

        payment = (interest * pv) / (1-(1 + interest)**-term)


    main()