calculator.py

#tkinter calculator


from tkinter import*

equa = ""

root = Tk()

equation = StringVar()

calculation = Label(root, textvariable= equation )

equation.set("23+54")

calculation.grid(columnspan= 4)


def btnPress(num):
    global equa
    equa = equa + str(num)
    equation.set(equa)


def EqualPress():
    global equa
    total = eval(equa)
    equation.set(total)
    equa =""


def Clear():
    global equa
    equa =""
    equation.set("0")


equation.set("Enter your expression:")

Button0 = Button(root, text= "0",command= lambda: btnPress(0))
Button0.grid(row= 4, column= 1)
Button1 = Button(root, text= "1",command= lambda: btnPress(1))
Button1.grid(row= 1, column= 0)
Button2 = Button(root, text= "2",command= lambda: btnPress(2))
Button2.grid(row= 1, column= 1)
Button3 = Button(root, text= "3",command= lambda: btnPress(3))
Button3.grid(row= 1, column= 2)
Button4 = Button(root, text= "4",command= lambda: btnPress(4))
Button4.grid(row= 2, column= 0)
Button5 = Button(root, text= "5",command= lambda: btnPress(5))
Button5.grid(row= 2, column= 1)
Button6 = Button(root, text= "6",command= lambda: btnPress(6))
Button6.grid(row= 2, column= 2)
Button7 = Button(root, text= "7",command= lambda: btnPress(7))
Button7.grid(row= 3, column= 0)
Button8 = Button(root, text= "8",command= lambda: btnPress(8))
Button8.grid(row= 3, column= 1)
Button9 = Button(root, text= "9",command= lambda: btnPress(9))
Button9.grid(row= 3, column= 2)
Plus = Button(root, text= "+",command= lambda: btnPress("+"))
Plus.grid(row= 1, column=3 )
Minus = Button(root, text= "-",command= lambda: btnPress("-"))
Minus.grid(row= 2, column= 3)
Multiply = Button(root, text= "*",command= lambda: btnPress("*"))
Multiply.grid(row= 3, column= 3)
Divide = Button(root, text= "/",command= lambda: btnPress("/"))
Divide.grid(row= 4, column=3 )
Equals = Button(root, text= "=", command= EqualPress)
Equals.grid(row= 4, column= 2)
Clear = Button(root, text= "C",command = Clear)
Clear.grid(row= 4, column= 0)





    



root.mainloop()