标签:csdn padding class imp tle nts ace space event
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from tkinter import *reset=Truedef buttonCallBack(event):    global label    global reset    num=event.widget[‘text‘]    if num==‘C‘:        label[‘text‘]="0"        return    if num in "=":        label[‘text‘]=str(eval(label[‘text‘]))        reset=True        return    s=label[‘text‘]    if s==‘0‘ or reset==True:        s=""        reset=False    label[‘text‘]=s+num#主窗口root=Tk()root.wm_title("计算器")#显示栏1label=Label(root,text="0",background="white",anchor="e")label[‘width‘]=35label[‘height‘]=2label.grid(row=1,columnspan=4,sticky=W)#按钮showText="789/456*123-0.C+"for i in range(4):    for j in range(4):        b=Button(root,text=showText[i*4+j],width=7)        b.grid(row=i+2,column=j)        b.bind("<button-1>",buttonCallBack)showText="()"for i in range(2):www.2cto.com    b=Button(root,text=showText[i],width=7)    b.grid(row=6,column=2+i)    b.bind("<button-1>",buttonCallBack)b=Button(root,text="=")b.grid(row=6,columnspan=2,sticky="we")b.bind("<button-1>",buttonCallBack)root.mainloop()</button-1></button-1></button-1> | 
标签:csdn padding class imp tle nts ace space event
原文地址:http://www.cnblogs.com/hanson1/p/7100155.html