python calculator

 

from tkinter import *

 

first_number=second_number=operator=None

 

def get_digit(digit):

    current = result_label['text']

    new = current + str(digit)

    result_label.config(text=new)

 

def clear():

    result_label.config(text='')

 

def get_operator(op):

    global first_number,operator

 

    first_number = int(result_label['text'])

    operator = op

    result_label.config(text='')

def get_result():

    global first_number,second_number,operator

 

    second_number = int(result_label['text'])

 

    if operator == '+':

     

        result_label.config(text=str(first_number+second_number))

    elif operator == '-':

        result_label.config(text=str(first_number - second_number))

    elif operator == '*':

        result_label.config(text=str(first_number * second_number))

    else:

        if second_number == 0:

            result_label.config(text='Error')

        else:

            result_label.config(text=str(round(first_number / second_number,2)))

 

root = Tk()

root.title('ZUSOO Calculator')

root.geometry('280x380')

root.resizable(0,0)

root.configure(background='black')

 

result_labe2 = Label(root,text='',bg='black',fg='white')

result_labe2.grid(row=1,column=0,columnspan=5,pady=(25,2),sticky='w')

result_labe2.config(font=('verdana',10,'bold'))

 

result_label = Label(root,text='',bg='black',fg='white')

result_label.grid(row=0,column=0,columnspan=5,pady=(50,25),sticky='w')

result_label.config(font=('verdana',30,'bold'))

 

btn7 = Button(root,text='7',bg='gray',fg='white',width=5,height=2,command=lambda :get_digit(7))

btn7.grid(row=1,column=0)

btn7.config(font=('verdana',14))

 

btn8 = Button(root,text='8',bg='gray',fg='white',width=5,height=2,command=lambda :get_digit(8))

btn8.grid(row=1,column=1)

btn8.config(font=('verdana',14))

 

btn9 = Button(root,text='9',bg='gray',fg='white',width=5,height=2,command=lambda :get_digit(9))

btn9.grid(row=1,column=2)

btn9.config(font=('verdana',14))

 

btn_add = Button(root,text='+',bg='gray',fg='white',width=5,height=2,command=lambda :get_operator('+'))

btn_add.grid(row=1,column=3)

btn_add.config(font=('verdana',14))

 

btn4 = Button(root,text='4',bg='gray',fg='white',width=5,height=2,command=lambda :get_digit(4))

btn4.grid(row=2,column=0)

btn4.config(font=('verdana',14))

 

btn5 = Button(root,text='5',bg='gray',fg='white',width=5,height=2,command=lambda :get_digit(5))

btn5.grid(row=2,column=1)

btn5.config(font=('verdana',14))

 

btn6 = Button(root,text='6',bg='gray',fg='white',width=5,height=2,command=lambda :get_digit(6))

btn6.grid(row=2,column=2)

btn6.config(font=('verdana',14))

 

btn_sub = Button(root,text='-',bg='gray',fg='white',width=5,height=2,command=lambda :get_operator('-'))

btn_sub.grid(row=2,column=3)

btn_sub.config(font=('verdana',14))

 

btn1 = Button(root,text='1',bg='gray',fg='white',width=5,height=2,command=lambda :get_digit(1))

btn1.grid(row=3,column=0)

btn1.config(font=('verdana',14))

 

btn2 = Button(root,text='2',bg='gray',fg='white',width=5,height=2,command=lambda :get_digit(2))

btn2.grid(row=3,column=1)

btn2.config(font=('verdana',14))

 

btn3 = Button(root,text='3',bg='gray',fg='white',width=5,height=2,command=lambda :get_digit(3))

btn3.grid(row=3,column=2)

btn3.config(font=('verdana',14))

 

btn_mul = Button(root,text='*',bg='gray',fg='white',width=5,height=2,command=lambda :get_operator('*'))

btn_mul.grid(row=3,column=3)

btn_mul.config(font=('verdana',14))

 

btn_clr = Button(root,text='C',bg='gray',fg='white',width=5,height=2,command=lambda :clear())

btn_clr.grid(row=4,column=0)

btn_clr.config(font=('verdana',14))

 

btn0 = Button(root,text='0',bg='gray',fg='white',width=5,height=2,command=lambda :get_digit(0))

btn0.grid(row=4,column=1)

btn0.config(font=('verdana',14))

 

btn_equals = Button(root,text='=',bg='gray',fg='white',width=5,height=2,command=get_result)

btn_equals.grid(row=4,column=2)

btn_equals.config(font=('verdana',14))

 

btn_div = Button(root,text='/',bg='gray',fg='white',width=5,height=2,command=lambda :get_operator('/'))

btn_div.grid(row=4,column=3)

btn_div.config(font=('verdana',14))

 

root.mainloop()


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