闲暇时间用tkinter写了个简易计算器,可实现简单的加减乘除运算,用了Button和Entry2个控件,下面是代码,只是简单的用了偏函数partial,因为那么多button的大部分参数都是一样的,使用偏函数可以简化参数传递,避免同样的参数传递写N次。
# -*- coding: utf-8 -*- #author: Cullen #import the module from Tkinter import * import tkFont import os from functools import partial from PIL import Image,ImageTk def get_input(entry,argu): entry.insert(END,argu) def backspace(entry): input_len = len(entry.get()) entry.delete(input_len - 1) def clear(entry): entry.delete(0,END) def calc(entry): input = entry.get() output = str(eval(input.strip())) clear(entry) entry.insert(END,output) def cal(): root = Tk() root.title("Calc") root.resizable(0,0) entry_font = tkFont.Font(size=12) entry = Entry(root,justify="right",font=entry_font) entry.grid(row=0,column=0,columnspan=4,sticky=N+W+S+E,padx=5,pady=5) button_font = tkFont.Font(size=10,weight=tkFont.BOLD) button_bg = '#D5E0EE' button_active_bg = '#E5E35B' myButton = partial(Button,root,bg=button_bg,padx=10,pady=3,activebackground = button_active_bg) button7 = myButton(text='7',command=lambda : get_input(entry,'7')) button7.grid(row=1,pady=5) button8 = myButton(text='8','8')) button8.grid(row=1,column=1,pady=5) button9 = myButton(text='9','9')) button9.grid(row=1,column=2,pady=5) button10 = myButton(text='+','+')) button10.grid(row=1,column=3,pady=5) button4 = myButton(text='4','4')) button4.grid(row=2,pady=5) button5 = myButton(text='5','5')) button5.grid(row=2,pady=5) button6 = myButton(text='6','6')) button6.grid(row=2,pady=5) button11 = myButton(text='-','-')) button11.grid(row=2,pady=5) button1 = myButton(text='1','1')) button1.grid(row=3,pady=5) button2 = myButton(text='2','2')) button2.grid(row=3,pady=5) button3 = myButton(text='3','3')) button3.grid(row=3,pady=5) button12 = myButton(text='*','*')) button12.grid(row=3,pady=5) button0 = myButton(text='0','0')) button0.grid(row=4,columnspan=2,padx=3,pady=5,sticky=N+S+E+W) button13 = myButton(text='.','.')) button13.grid(row=4,pady=5) button14 = Button(root,text='/','/')) button14.grid(row=4,pady=5) button15 = Button(root,text='<-',command=lambda : backspace(entry),activebackground = button_active_bg) button15.grid(row=5,pady=5) button16 = Button(root,text='C',command=lambda : clear(entry),activebackground = button_active_bg) button16.grid(row=5,pady=5) button17 = Button(root,text='=',command=lambda : calc(entry),activebackground = button_active_bg) button17.grid(row=5,sticky=N+S+E+W) root.mainloop() if __name__ == '__main__': cal()
下面是运行结果:
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持编程小技巧。
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