from tkinter import *
def btnClick(numbers):
    global operator
    operator=operator + str(numbers)
    text_Input.set(operator)

def btnClearDisplay():
    global operator
    operator=""
    text_Input.set("")
def btnEqualsInput():
    global operator
    sumup=str(eval(operator))
    text_Input.set(sumup)
    operator=""

cal = Tk()
cal.title("Calculator")
operator=""
text_Input= StringVar()

txtDisplay = Entry(cal,font=('arial', 20,'bold'), textvariable= text_Input, bd= 30, insertwidth=4,
                   bg="powder blue", justify='right').grid(columnspan=4)
btn7=Button(cal, padx=16, pady=16, bd=8, fg="Black", font=('arial', 20,'bold'),
            text="7", bg="powder blue", command=lambda:btnClick(7)).grid(row=1, column=0)
btn8=Button(cal, padx=16, pady=16, bd=8, fg="Black", font=('arial', 20,'bold'),
            text="8",bg="powder blue", command=lambda:btnClick(8)).grid(row=1, column=1)
btn9=Button(cal, padx=16, pady=16, bd=8, fg="Black", font=('arial', 20,'bold'),
            text="9",bg="powder blue", command=lambda:btnClick(9)).grid(row=1, column=2)
Addition=Button(cal, padx=16, pady=16, bd=8, fg="Black", font=('arial', 20,'bold'),
            text="+",bg="powder blue", command=lambda:btnClick("+")).grid(row=1, column=3)
############################################################################################################################
btn4=Button(cal, padx=16, pady=16, bd=8, fg="Black", font=('arial', 20,'bold'),
            text="4",bg="powder blue", command=lambda:btnClick(4)).grid(row=2, column=0)
btn5=Button(cal, padx=16, pady=16, bd=8, fg="Black", font=('arial', 20,'bold'),
            text="5",bg="powder blue", command=lambda:btnClick(5)).grid(row=2, column=1)
btn6=Button(cal, padx=16,pady=16, bd=8, fg="Black", font=('arial', 20,'bold'),
            text="6",bg="powder blue", command=lambda:btnClick(6)).grid(row=2, column=2)
Subtraction=Button(cal, padx=16, pady=16, bd=8, fg="Black", font=('arial', 20,'bold'),
            text="-",bg="powder blue", command=lambda:btnClick("-")).grid(row=2, column=3)
##############################################################################################################################
btn1=Button(cal, padx=16,pady=16, bd=8, fg="Black", font=('arial', 20,'bold'),
            text="1",bg="powder blue", command=lambda:btnClick(1)).grid(row=3, column=0)
btn2=Button(cal, padx=16,pady=16, bd=8, fg="Black", font=('arial', 20,'bold'),
            text="2",bg="powder blue", command=lambda:btnClick(2)).grid(row=3, column=1)
btn3=Button(cal, padx=16,pady=16, bd=8, fg="Black", font=('arial', 20,'bold'),
            text="3",bg="powder blue", command=lambda:btnClick(3)).grid(row=3, column=2)
Multiplication=Button(cal, padx=16,pady=16, bd=8, fg="Black", font=('arial', 20,'bold'),
            text="*",bg="powder blue", command=lambda:btnClick("*")).grid(row=3, column=3)
############################################################################################################################
btn0=Button(cal, padx=16,pady=16, bd=8, fg="Black", font=('arial', 20,'bold'),
            text="0",bg="powder blue", command=lambda:btnClick(0)).grid(row=4, column=0)
btnclear=Button(cal, padx=16, pady=16, bd=8, fg="Black", font=('arial', 20,'bold'),
            text="C",bg="powder blue", command = btnClearDisplay).grid(row=4, column=1)
btnEquals=Button(cal, padx=16, pady=16, bd=8, fg="Black", font=('arial', 20,'bold'),
            text="=",bg="powder blue",command=btnEqualsInput).grid(row=4, column=2)
Division=Button(cal, padx=16, pady=16, bd=8, fg="Black", font=('arial', 20,'bold'),
            text="/",bg="powder blue", command=lambda:btnClick("/")).grid(row=4, column=3)

cal.mainloop()
