Python Tkinter写的个人所得税计算器(原创)

刚学Tkinter两天，边学边写了一个"个人所得税计算器"，欢迎大侠们进来指点指点：）

python 代码

#!/usr/bin/env python
"""caloulate person taxes"""
from Tkinter import *
import sys

class tax(Frame):
    """caloulate personal tax"""
    def __init__(self,parent = None):
        Frame.__init__(self,parent)
        self.pack(side=TOP)
        self.entries = []
        for var_value in field_list:
            row = Frame(self)
            row.pack(side=TOP,fill=X)
            Label(row,text=var_value,width=15,height=2).pack(side=LEFT)
            ent = Entry(row,bg = 'white')
            ent.pack(side=RIGHT,expand=YES,fill=X)
            ent.bind('<Return>',(lambda event:self.fetch_value()))
            self.entries.append(ent)

        self.init_btn()
        self.init_result()

    def fetch_value(self):
        """fetch valve and get result"""
        result = []
        try:
            for entry in self.entries:
                result.append(entry.get())

            res = self.get_result(result[0],result[1])
            self.lab_result["text"] = 'Your Salary is %s .\n Your Tax is %s .\n Your Money is %s .\n' % (res[0],res[1],res[2])
            self.lab_result["bg"] = 'lightyellow'
            self.lab_result["fg"] = 'red'
        except ValueError:
            self.lab_result["bg"] = 'red'
            self.lab_result["fg"] = 'black'
            self.lab_result["text"] = 'Error Occur,Please Test Again.'

    def get_result(self,salary,start):
        """caloulate tax"""
        over = float(salary) - float(start)
        tax = ""
        if over <= 500:
            tax = over*0.05
        elif over > 500 and over <= 2000:
            tax = over*0.1 - 25
        elif over > 2000 and over <= 5000:
            tax = over*0.15 - 125
        elif over > 5000 and over <= 20000:
            tax = over*0.2 - 375
        elif over > 20000 and over <= 40000:
            tax = over*0.25 - 1375
        elif over > 40000 and over <= 60000:
            tax = over*0.3 - 3375
        elif over > 60000 and over <= 80000:
            tax = over*0.35 - 6375
        elif over > 80000 and over <= 100000:
            tax = over*0.4 - 10375
        else:
            tax = over*0.45 - 15375
        return [salary,tax,float(salary) - tax]

    def init_btn(self):
        """init control button"""
        btn_frame = Frame(self)
        btn_frame.pack(expand=YES,fill=X)
        btn_submit = Button(btn_frame,text='Submit',command=self.fetch_value)
        btn_submit.pack(side=LEFT,expand=YES,fill=X)
        Button(btn_frame,text="Reset",command=self.clear_data).pack(side=LEFT,expand=YES,fill=X)
        Button(btn_frame,text="Quit",command=sys.exit).pack(side=LEFT,expand=YES,fill=X)

    def init_result(self):
        """init result label"""
        self.lab_result = Label(self,fg='red',font = ('times',16,'bold'))
        self.lab_result.pack(expand=YES,fill=X)

    def clear_data(self):
        """clear old data"""
        for entry in self.entries:
            entry.delete(0,END)
        self.lab_result["text"] = ''
        self.lab_result["bg"] = '#eeeeee'


field_list = ["Type Your Salary:","Local Tax Start:"]
#start process
root = Tk()
root.title('Personal Income caloulate')
root.geometry("350x200+250+50")
per_tax = tax(root)
root.mainloop()