我想为我的计算器绑一把钥匙。我想接钥匙 计算器里有键盘。但我不能
当我在网上看的时候,一切都是在Claas完成的。我必须重写整个程序吗?谢谢你的回答。我是新来的,所以请原谅我的错误。你知道吗
from tkinter import *
wyrazenie = "
#num
def press(num):
global wyrazenie
wyrazenie = wyrazenie + str(num)
equation.set(wyrazenie)
#equalpress
def equalpress():
try:
global wyrazenie
total = str(eval(wyrazenie))
equation.set(total)
wyrazenie = ""
except:
equation.set(" błąd ")
wyrazenie = ""
#clear
def clear():
global wyrazenie
wyrazenie = ""
equation.set("")
#app
if __name__ == "__main__":
okno = Tk()
#okno
okno.configure(background='snow3')
topFrame = Frame(okno)
topFrame.grid()
bottomFrame = Frame(okno)
bottomFrame.grid()
okno.title("Kalkulator")
equation = StringVar()
wyrazenie_pole = Entry(okno, textvariable=equation)
wyrazenie_pole.grid(columnspan=4, ipadx=60)
equation.set('')
#keys
color_bg = 'deep sky blue' #kolor przycisków
color_fg = ""
button1 = Button(okno, text=' 1 ', fg='black', bg=color_bg,
command=lambda: press(1), height=1, width=7)
button1.grid(row=3, column=0)
if okno.bind('<Button-1>'):
button2 = Button(okno, text=' 2 ', fg='black', bg=color_bg,
command=lambda: press(2), height=1, width=7)
button2.grid(row=3, column=1)
button3 = Button(okno, text=' 3 ', fg='black', bg=color_bg,
command=lambda: press(3), height=1, width=7)
button3.grid(row=3, column=2)
plus = Button(okno, text=' + ', fg='black', bg=color_bg,
command=lambda: press("+"), height=1, width=7)
plus.grid(row=3, column=3)
minus = Button(okno, text=' - ', fg='black', bg=color_bg,
command=lambda: press("-"), height=1, width=7)
minus.grid(row=4, column=3)
clear = Button(okno, text='Clear', fg='black', bg=color_bg,
command=clear, height=1, width=7)
clear.grid(row=7, column='1')
okno.mainloop()
您还可以将焦点设置在您的条目上:
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