Python编程使用tkinter模块实现计算器软件完整代码示例

import tkinter #导入tkinter模块root = tkinter.Tk()root.minsize(280,500)root.title('李蛟龙的计算器')#1.界面布局#显示面板result = tkinter.StringVar()result.set(0)              #显示面板显示结果1，用于显示默认数字0result2 = tkinter.StringVar()      #显示面板显示结果2，用于显示计算过程result2.set('')#显示版label = tkinter.Label(root,font = ('微软雅黑',20),bg = '#EEE9E9',bd ='9',fg = '#828282',anchor = 'se',textvariable = result2)label.place(width = 280,height = 170)label2 = tkinter.Label(root,font = ('微软雅黑',30),bg = '#EEE9E9',bd ='9',fg = 'black',anchor = 'se',textvariable = result)label2.place(y = 170,width = 280,height = 60)#数字键按钮btn7 = tkinter.Button(root,text = '7',font = ('微软雅黑',20),fg = ('#4F4F4F'),bd = 0.5,command = lambda : pressNum('7'))btn7.place(x = 0,y = 285,width = 70,height = 55)btn8 = tkinter.Button(root,text = '8',font = ('微软雅黑',20),fg = ('#4F4F4F'),bd = 0.5,command = lambda : pressNum('8'))btn8.place(x = 70,y = 285,width = 70,height = 55)btn9 = tkinter.Button(root,text = '9',font = ('微软雅黑',20),fg = ('#4F4F4F'),bd = 0.5,command = lambda : pressNum('9'))btn9.place(x = 140,y = 285,width = 70,height = 55)btn4 = tkinter.Button(root,text = '4',font = ('微软雅黑',20),fg = ('#4F4F4F'),bd = 0.5,command = lambda : pressNum('4'))btn4.place(x = 0,y = 340,width = 70,height = 55)btn5 = tkinter.Button(root,text = '5',font = ('微软雅黑',20),fg = ('#4F4F4F'),bd = 0.5,command = lambda : pressNum('5'))btn5.place(x = 70,y = 340,width = 70,height = 55)btn6 = tkinter.Button(root,text = '6',font = ('微软雅黑',20),fg = ('#4F4F4F'),bd = 0.5,command = lambda : pressNum('6'))btn6.place(x = 140,y = 340,width = 70,height = 55)btn1 = tkinter.Button(root,text = '1',font = ('微软雅黑',20),fg = ('#4F4F4F'),bd = 0.5,command = lambda : pressNum('1'))btn1.place(x = 0,y = 395,width = 70,height = 55)btn2 = tkinter.Button(root,text = '2',font = ('微软雅黑',20),fg = ('#4F4F4F'),bd = 0.5,command = lambda : pressNum('2'))btn2.place(x = 70,y = 395,width = 70,height = 55)btn3 = tkinter.Button(root,text = '3',font = ('微软雅黑',20),fg = ('#4F4F4F'),bd = 0.5,command = lambda : pressNum('3'))btn3.place(x = 140,y = 395,width = 70,height = 55)btn0 = tkinter.Button(root,text = '0',font = ('微软雅黑',20),fg = ('#4F4F4F'),bd = 0.5,command = lambda : pressNum('0'))btn0.place(x = 70,y = 450,width = 70,height = 55)#运算符号按钮btnac = tkinter.Button(root,text = 'AC',bd = 0.5,font = ('黑体',20),fg = 'orange',command = lambda :pressCompute('AC'))btnac.place(x = 0,y = 230,width = 70,height = 55)btnback = tkinter.Button(root,text = '←',font = ('微软雅黑',20),fg = '#4F4F4F',bd = 0.5,command = lambda:pressCompute('b'))btnback.place(x = 70,y = 230,width = 70,height = 55)btndivi = tkinter.Button(root,text = '÷',font = ('微软雅黑',20),fg = '#4F4F4F',bd = 0.5,command = lambda:pressCompute('/'))btndivi.place(x = 140,y = 230,width = 70,height = 55)btnmul = tkinter.Button(root,text ='×',font = ('微软雅黑',20),fg = "#4F4F4F",bd = 0.5,command = lambda:pressCompute('*'))btnmul.place(x = 210,y = 230,width = 70,height = 55)btnsub = tkinter.Button(root,text = '-',font = ('微软雅黑',20),fg = ('#4F4F4F'),bd = 0.5,command = lambda:pressCompute('-'))btnsub.place(x = 210,y = 285,width = 70,height = 55)btnadd = tkinter.Button(root,text = '+',font = ('微软雅黑',20),fg = ('#4F4F4F'),bd = 0.5,command = lambda:pressCompute('+'))btnadd.place(x = 210,y = 340,width = 70,height = 55)btnequ = tkinter.Button(root,text = '=',bg = 'orange',font = ('微软雅黑',20),fg = ('#4F4F4F'),bd = 0.5,command = lambda :pressEqual())btnequ.place(x = 210,y = 395,width = 70,height = 110)btnper = tkinter.Button(root,text = '%',font = ('微软雅黑',20),fg = ('#4F4F4F'),bd = 0.5,command = lambda:pressCompute('%'))btnper.place(x = 0,y = 450,width = 70,height = 55)btnpoint = tkinter.Button(root,text = '.',font = ('微软雅黑',20),fg = ('#4F4F4F'),bd = 0.5,command = lambda:pressCompute('.'))btnpoint.place(x = 140,y = 450,width = 70,height = 55)#操作函数lists = []              #设置一个变量 保存运算数字和符号的列表isPressSign = False         #添加一个判断是否按下运算符号的标志,假设默认没有按下按钮isPressNum = False#数字函数def pressNum(num):          #设置一个数字函数 判断是否按下数字 并获取数字将数字写在显示版上  global lists           #全局化lists和按钮状态isPressSign  global isPressSign  if isPressSign == False:    pass  else:              #重新将运算符号状态设置为否    result.set(0)    isPressSign = False  #判断界面的数字是否为0  oldnum = result.get()       #第一步  if oldnum =='0':         #如过界面上数字为0 则获取按下的数字    result.set(num)  else:              #如果界面上的而数字不是0 则链接上新按下的数字    newnum = oldnum + num    result.set(newnum)      #将按下的数字写到面板中#运算函数def pressCompute(sign):  global lists  global isPressSign  num = result.get()       #获取界面数字  lists.append(num)        #保存界面获取的数字到列表中  lists.append(sign)       #讲按下的运算符号保存到列表中  isPressSign = True  if sign =='AC':        #如果按下的是'AC'按键，则清空列表内容，讲屏幕上的数字键设置为默认数字0    lists.clear()    result.set(0)  if sign =='b':         #如果按下的是退格‘'，则选取当前数字第一位到倒数第二位    a = num[0:-1]    lists.clear()    result.set(a)#获取运算结果函数def pressEqual():  global lists  global isPressSign  curnum = result.get()      #设置当前数字变量，并获取添加到列表  lists.append(curnum)  computrStr = ''.join(lists)   #讲列表内容用join命令将字符串链接起来  endNum = eval(computrStr)    #用eval命令运算字符串中的内容#  a = str(endNum)#  b = '='+a            #给运算结果前添加一个 ‘=' 显示  不过这样写会有BUG 不能连续运算，这里注释，不要 =#  c = b[0:10]           #所有的运算结果取9位数  result.set(endNum)          #讲运算结果显示到屏幕1  result2.set(computrStr)     #将运算过程显示到屏幕2  lists.clear()          #清空列表内容root.mainloop()