[python 练习] 计算个税

题目：利用python计算个税

说明：python有序字典的使用

代码：

 # -*- coding: utf-8 -*-

 from collections import OrderedDict

 # 税率表, 2018.10新个税

 tax_ratio = OrderedDict()

 tax_ratio[(0, 5000)] = 0

 tax_ratio[(5000, 3000)] = 0.03

 tax_ratio[(3000, 12000)] = 0.1

 tax_ratio[(12000, 25000)] = 0.2

 tax_ratio[(25000, 35000)] = 0.25

 tax_ratio[(35000, 55000)] = 0.3

 tax_ratio[(55000, 80000)] = 0.35

 tax_ratio[(80000, float('inf'))] = 0.45

 # 计算税

 def tax(income, social_benefits=0):

     income -= social_benefits

     total_tax = 0

     for k, v in tax_ratio.items():

         if income > k[1]:

             income -= k[1]

             total_tax += k[1] * v

         elif k[0] < income < k[1]:

             total_tax += income * v

             break

     return total_tax

 if __name__ == '__main__':

     print(tax(12705))

     print(tax(15000, 2295))

     print(tax(income=15000, social_benefits=2295))

     print(tax(social_benefits=2295, income=15000))