python实例： 税率计算

直接上源码：

#!/usr/bin/env python
# -*- coding: utf-8 -*


class tax(object):
    '''
    Get the tax you want to know！
    '''   
    
    def init_input(self):
    
        while True:        
            try:
                print '*'*60
                input1 = raw_input("Your pretax salary (month):\n")
                if float(input1)>0:
                    self.pretax = float(input1)
                    #print "*"*40
                    break
                else:
                    print "The pretax salary must large than zero"
                    continue            
            except (ValueError,TypeError):            
                print "Your input is not right!"
    
        while True:          
            try:                
                input2 = raw_input("The base salary for insurance:")
            
                if input2=='':
                    self.ins_base = self.pretax
                    print self.ins_base
                    break
                else:
                    if float(input2)>0:
                        self.ins_base = float(input2)
                        #print "*"*40
                        break        
                    else:
                        print "The base salary for insurance must large than zero"
                        continue 
            except (ValueError,TypeError):            
                print "Your input is not right!"

        while True:          
            try:                
                input3 = raw_input("The base salary for housing found:")
            
                if input3=='':
                    self.hf_base = self.pretax
                    print self.hf_base
                    print "*"*40
                    break
                elif input1 == 'exit':
                    break
                else:
                    if float(input3)>0:
                        self.hf_base = float(input3)
                        print "*"*40
                        break
                    else:
                        print "The base salary for housing found must large than zero"
                        continue 
            except (ValueError,TypeError):            
                print "Your input is not right!"

    def insurance(self):
        self.ins_UP = 15669     #五险最大基数        
        self.endowment_ins = max([min([self.ins_base,self.ins_UP]),2089])*0.08    #养老保险
        self.medical_ins = max([min([self.ins_base,self.ins_UP]),3134])*0.02+3    #医疗保险
        self. unemployment_ins = max([min([self.ins_base,self.ins_UP]),2089])*0.005    #失业保险
        self.injury_ins = 0    #工伤保险
        self.maternity_ins = 0    #生育保险
        self.sum_ins = self.endowment_ins + self.medical_ins + self.unemployment_ins + self.injury_ins + self.maternity_ins   
        return self.sum_ins

    def housingFound(self):
        self.hf_UP = 21258
        self.sum_hf = min([self.hf_base,self.hf_UP])*0.12
        return self.sum_hf
    
    def tax(self):
        self.threshold = 3500
        #self.threshold = 4800
        self.tax_base = self.pretax-self.sum_ins-self.sum_hf-self.threshold
        if self.tax_base<=0:
            self.tax = 0
        elif self.tax_base>0 and self.tax_base<=1500:
            self.tax = self.tax_base*0.03
        elif self.tax_base>1500 and self.tax_base<=4500:
            self.tax = self.tax_base*0.1-105
        elif self.tax_base>4500 and self.tax_base<=9000:
            self.tax = self.tax_base*0.2-505
        elif self.tax_base>9000 and self.tax_base<=35000:
            self.tax = self.tax_base*0.25-1005
        elif self.tax_base>35000 and self.tax_base<=55000:
            self.tax = self.tax_base*0.3-2755
        elif self.tax_base>55000 and self.tax_base<=80000:
            self.tax = self.tax_base*0.35-5505
        elif self.tax_base>80000 :
            self.tax = self.tax_base*0.45-13505
        return self.tax
    
    def afterTax(self):
        self.after_tax = self.pretax-self.sum_ins-self.sum_hf-self.tax 
        return self.after_tax
    
    def companyPay(self):
        self.comp_UP = 15669     #五险最大基数 
        self.endowment_comp = max([min([self.ins_base,self.comp_UP]),2089])*0.2    #养老保险
        self.medical_comp = max([min([self.ins_base,self.comp_UP]),3134])*0.1   #医疗保险
        self. unemployment_comp = max([min([self.ins_base,self.comp_UP]),2089])*0.01    #失业保险
        self.injury_comp = max([min([self.ins_base,self.comp_UP]),3134])*0.005    #工伤保险
        self.maternity_comp = max([min([self.ins_base,self.comp_UP]),3134])*0.008    #生育保险
        self.sum_comp = self.endowment_comp + self.medical_comp + self.unemployment_comp + self.injury_comp + self.maternity_comp   
        self.companyPay = self.sum_hf+self.sum_comp+self.pretax
        return self.companyPay
    
def main():
    while True:
        
        mytax = tax()
        mytax.init_input()
        insuranceU = mytax.insurance()
        hfU = mytax.housingFound()
        taxU = mytax.tax()
        after_taxU = mytax.afterTax()
        companyPayU = mytax.companyPay()
    
        print "-"*8
        print "person:"
        print "-"*8
        print "%25s: %-10.2f" %('salary',mytax.pretax)
        #print "%15s: %-10.2f" %('insurance',insuranceU)
        print "%25s: %-10.2f" %('endowment insurance',mytax.endowment_ins)
        print "%25s: %-10.2f" %('medical insurance',mytax.medical_ins)
        print "%25s: %-10.2f" %('unemployment insurance',mytax.unemployment_ins)
        print "%25s: %-10.2f" %('injury insurance',mytax.injury_ins)
        print "%25s: %-10.2f" %('maternity insurance',mytax.maternity_ins)
        print "%25s: %-10.2f" %('housing found',hfU)
        print "%25s: %-10.2f" %('tax',taxU)
        print "%25s: %-10.2f" %('after tax',after_taxU)
        print "-"*8
        print "company:"
        print "-"*8
        print "%25s: %-10.2f" %('companyPay',companyPayU)
        print "%25s: %-10.2f" %('salary',mytax.pretax)
        #print "%25s: %-10.2f" %('insurance',mytax.sum_comp)
        print "%25s: %-10.2f" %('endowment insurance',mytax.endowment_comp)
        print "%25s: %-10.2f" %('medical insurance',mytax.medical_comp)
        print "%25s: %-10.2f" %('unemployment insurance',mytax.unemployment_comp)
        print "%25s: %-10.2f" %('injury insurance',mytax.injury_comp)
        print "%25s: %-10.2f" %('maternity insurance',mytax.maternity_comp)
        print "%25s: %-10.2f" %('housing found',hfU)

if __name__ == '__main__':
    main()

运行结果 ：