Calculator.py

def click(event):
    global scrval
    t =  event.widget.cget("text")
    print(t)
    if t=="=":
        if scrval.get().isdigit():
            val = int(scrval.get())
        else:
            try:
                val = eval(scrval.get())
            except:
                val = "Error"
        scrval.set(val)
        screen.update
    elif t=="C":
        scrval.set("")
        screen.update()
    else:
        scrval.set(scrval.get()+t)
        screen.update()
def buttons(m,n):
    f1 = Frame(a,bg="cyan")
    for i in range(m,n,-1):
        b = Button(f1,text=f"{i}",font="lucida 30 bold", borderwidth=3,padx=10,pady=1)
        b.pack(side=RIGHT,padx=23,pady=1)
        b.bind("<Button-1>",click)
    f1.pack(fill=X)
from tkinter import *
a = Tk()
a.title("Calculator By Syed Maaz")
a.geometry("400x600+450+50")
a.maxsize(400,600)
a.minsize(400,600)
a.wm_iconbitmap("cal.ico")
scrval = StringVar()
scrval.set("")
screen= Entry(a,textvar=scrval,font="lucida 35 bold")
screen.pack(fill = X,ipadx =20, padx=15,pady =20)
buttons(9,6)
buttons(6,3)
buttons(3,0)
f1 = Frame(a,bg="cyan")
b = Button(f1,text=".",font="lucida 30 bold", borderwidth=3,padx=15,pady=1)
b.pack(side=RIGHT,padx=23,pady=1)
b.bind("<Button-1>",click)
b = Button(f1,text="0",font="lucida 30 bold", borderwidth=3,padx=10,pady=1)
b.pack(side=RIGHT,padx=23,pady=1)
b.bind("<Button-1>",click)
b = Button(f1,text="+",font="lucida 30 bold", borderwidth=3,padx=10,pady=1)
b.pack(side=RIGHT,padx=23,pady=1)
b.bind("<Button-1>",click)
f1.pack(fill=X)
f1 = Frame(a,bg="cyan")
b = Button(f1,text="-",font="lucida 30 bold", borderwidth=3,padx=14,pady=1)
b.pack(side=RIGHT,padx=23,pady=1)
b.bind("<Button-1>",click)
b = Button(f1,text="*",font="lucida 29 bold", borderwidth=3,padx=13,pady=1)
b.pack(side=RIGHT,padx=23,pady=1)
b.bind("<Button-1>",click)
b = Button(f1,text="/",font="lucida 30 bold", borderwidth=3,padx=16,pady=1)
b.pack(side=RIGHT,padx=23,pady=1)
b.bind("<Button-1>",click)
f1.pack(fill=X)
f1 = Frame(a,bg="cyan")
b = Button(f1,text="=",font="lucida 30 bold", borderwidth=3,padx=9,pady=1)
b.pack(side=RIGHT,padx=23,pady=1)
b.bind("<Button-1>",click)
b = Button(f1,text="C",font="lucida 30 bold", borderwidth=3,padx=6,pady=1)
b.pack(side=RIGHT,padx=23,pady=1)
b.bind("<Button-1>",click)
b = Button(f1,text="%",font="lucida 31 bold", borderwidth=3,padx=4,pady=1)
b.pack(side=RIGHT,padx=23,pady=1)
b.bind("<Button-1>",click)
f1.pack(fill=X)
a.mainloop()