python 的 Tkinter实现一个简易计算器

使用python 的 Tkinter实现一个简易计算器

#coding:utf-8
from Tkinter import *
import time
root = Tk()
def cacl(input_str):
if "x" in input_str:
ret = input_str.split("x")
return int(ret[0]) * int(ret[1])
def callback(n):
print n
def callback1(n):
print n
class App:
def __init__(self, master):
frame1 = Frame(master)
frame1.pack()
frame = Frame(master)
frame.pack()
Button(frame, text="1",command=lambda: callback(1) ).grid(row=0,column=0)
Button(frame, text="2",command=lambda: callback(2) ).grid(row=0,column=1)
Button(frame, text="3",command=lambda: callback(3) ).grid(row=0,column=2)
Button(frame, text="4",command=lambda: callback(4) ).grid(row=1,column=0)
Button(frame, text="5",command=lambda: callback(5) ).grid(row=1,column=1)
Button(frame, text="6",command=lambda: callback(6) ).grid(row=1,column=2)
Button(frame, text="7",command=lambda: callback(7) ).grid(row=2,column=0)
Button(frame, text="8",command=lambda: callback(8) ).grid(row=2,column=1)
Button(frame, text="9",command=lambda: callback(9) ).grid(row=2,column=2)
Button(frame, text="0",command=lambda: callback(0) ).grid(row=3,column=0)
Button(frame, text="+",command=lambda: callback1("+") ).grid(row=3,column=1)
Button(frame, text="-",command=lambda: callback1("-") ).grid(row=3,column=2)
Button(frame, text="*",command=lambda: callback1("*") ).grid(row=4,column=1)
Button(frame, text="/",command=lambda: callback1("/") ).grid(row=4,column=2)
Button(frame, text="=", command=self.say_hi).grid(row=4,column=0)
w = Label(frame1,text="输入结果")
w.pack()
self.e = Entry(frame1)
self.e.pack(padx=5)
w1 = Label(frame1,text="计算结果")
w1.pack()
v = StringVar()
e1 = Entry(frame1, textvariable=v)
v.set("")
self.v = v
e1.pack()
def say_hi(self):
print "hi there, everyone!",self.e.get()
input_str = self.e.get()
self.v.set(cacl(input_str))
app = App(root)
root.mainloop()

来源：PY学习网：原文地址：https://www.py.cn/article.html