Python Tkinter implements the simple calculator function, pythontkinter
In my spare time, I wrote a simple calculator using tkinter to implement simple addition, subtraction, multiplication, division operations. I used two buttons and entrycontrols. below is the code, but I simply used the partial function partial, because most of the parameters of multiple buttons are the same, you can use partial functions to simplify parameter transmission and avoid writing the same parameters N times.
# -*- 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, column=0, pady=5) button8 = myButton(text='8', command=lambda : get_input(entry, '8')) button8.grid(row=1, column=1, pady=5) button9 = myButton(text='9', command=lambda : get_input(entry, '9')) button9.grid(row=1, column=2, pady=5) button10 = myButton(text='+', command=lambda : get_input(entry, '+')) button10.grid(row=1, column=3, pady=5) button4 = myButton(text='4', command=lambda : get_input(entry, '4')) button4.grid(row=2, column=0, pady=5) button5 = myButton(text='5', command=lambda : get_input(entry, '5')) button5.grid(row=2, column=1, pady=5) button6 = myButton(text='6', command=lambda : get_input(entry, '6')) button6.grid(row=2, column=2, pady=5) button11 = myButton(text='-', command=lambda : get_input(entry, '-')) button11.grid(row=2, column=3, pady=5) button1 = myButton(text='1', command=lambda : get_input(entry, '1')) button1.grid(row=3, column=0, pady=5) button2 = myButton(text='2', command=lambda : get_input(entry, '2')) button2.grid(row=3, column=1, pady=5) button3 = myButton(text='3', command=lambda : get_input(entry, '3')) button3.grid(row=3, column=2, pady=5) button12 = myButton(text='*', command=lambda : get_input(entry, '*')) button12.grid(row=3, column=3, pady=5) button0 = myButton(text='0', command=lambda : get_input(entry, '0')) button0.grid(row=4, column=0, columnspan=2, padx=3, pady=5, sticky=N+S+E+W) button13 = myButton(text='.', command=lambda : get_input(entry, '.')) button13.grid(row=4, column=2, pady=5) button14 = Button(root, text='/', bg=button_bg, padx=10, pady=3, command=lambda : get_input(entry, '/')) button14.grid(row=4, column=3, pady=5) button15 = Button(root, text='<-', bg=button_bg, padx=10, pady=3, command=lambda : backspace(entry), activebackground = button_active_bg) button15.grid(row=5, column=0, pady=5) button16 = Button(root, text='C', bg=button_bg, padx=10, pady=3, command=lambda : clear(entry), activebackground = button_active_bg) button16.grid(row=5, column=1, pady=5) button17 = Button(root, text='=', bg=button_bg, padx=10, pady=3, command=lambda : calc(entry), activebackground = button_active_bg) button17.grid(row=5, column=2, columnspan=2, padx=3, pady=5, sticky=N+S+E+W) root.mainloop() if __name__ == '__main__': cal()
The running result is as follows:
The above is all the content of this article. I hope it will be helpful for your learning and support for helping customers.