Answers for "how to make a calculator in Python"

create calculator in python

from tkinter import *
import random
import time

def btnClick(numbers):
	global operator
	operator = operator + str(numbers)
	text_Input.set(operator)

def bcd():
	global operator
	operator = ""
	text_Input.set("")

def bei():
	global operator
	sumup = str(eval(operator))
	text_Input.set(sumup)
	operator = sumup


root = Tk()
root.title("Calculator")
root.resizable(False, False)

operator = ""
text_Input = StringVar()

#AnsShow
textDisplay = Entry(root, font = ('arial', 20, 'bold'), textvariable = text_Input, bd = 30, insertwidth = 4, bg = "red", justify = 'right')
textDisplay.grid(columnspan = 4)

#button
btn7 = Button(root, padx = 16, bd = 8, fg = "black", bg = "red", font = ('arial', 20, 'bold'), text = "7", command = lambda:btnClick(7)).grid(row = 1, column = 0)

btn8 = Button(root, padx = 16, bd = 8, fg = "black", bg = "red", font = ('arial', 20, 'bold'), text = "8", command = lambda:btnClick(8)).grid(row = 1, column = 1)

btn9 = Button(root, padx = 16, bd = 8, fg = "black", bg = "red", font = ('arial', 20, 'bold'), text = "9", command = lambda:btnClick(9)).grid(row = 1, column = 2)

Add = Button(root, padx = 16, bd = 8, fg = "black", bg = "red", font = ('arial', 20, 'bold'), text = "+", command = lambda:btnClick("+")).grid(row = 1, column = 3)

#============================================================================================================================#
btn4 = Button(root, padx = 16, bd = 8, fg = "black", bg = "red", font = ('arial', 20, 'bold'), text = "4", command = lambda:btnClick(4)).grid(row = 2, column = 0)

btn5 = Button(root, padx = 16, bd = 8, fg = "black", bg = "red", font = ('arial', 20, 'bold'), text = "5", command = lambda:btnClick(5)).grid(row = 2, column = 1)

btn6 = Button(root, padx = 16, bd = 8, fg = "black", bg = "red", font = ('arial', 20, 'bold'), text = "6", command = lambda:btnClick(6)).grid(row = 2, column = 2)

Sub = Button(root, padx = 16, bd = 8, fg = "black", bg = "red", font = ('arial', 20, 'bold'), text = "-", command = lambda:btnClick("-")).grid(row = 2, column = 3)

#===============================================================================================================================#
btn1 = Button(root, padx = 16, bd = 8, fg = "black", bg = "red", font = ('arial', 20, 'bold'), text = "1", command = lambda:btnClick(1)).grid(row = 3, column = 0)

btn2 = Button(root, padx = 16, bd = 8, fg = "black", bg = "red", font = ('arial', 20, 'bold'), text = "2", command = lambda:btnClick(2)).grid(row = 3, column = 1)

btn3 = Button(root, padx = 16, bd = 8, fg = "black", bg = "red", font = ('arial', 20, 'bold'), text = "3", command = lambda:btnClick(3)).grid(row = 3, column = 2)

Multiply = Button(root, padx = 16, bd = 8, fg = "black", bg = "red", font = ('arial', 20, 'bold'), text = "*", command = lambda:btnClick("*")).grid(row = 3, column = 3)

#==================================================================================================================================#
btn0 = Button(root, padx = 16, bd = 8, fg = "black", bg = "red", font = ('arial', 20, 'bold'), text = "0", command = lambda:btnClick(0)).grid(row = 4, column = 0)

equal = Button(root, padx = 16, bd = 8, fg = "black", bg = "red", font = ('arial', 20, 'bold'), text = "=", command = bei).grid(row = 4, column = 1)

divide = Button(root, padx = 16, bd = 8, fg = "black", bg = "red", font = ('arial', 20, 'bold'), text = "/", command = lambda:btnClick("/")).grid(row = 4, column = 2)

clear = Button(root, padx = 16, bd = 8, fg = "black", bg = "red", font = ('arial', 20, 'bold'), text = "c", command = bcd).grid(row = 4, column = 3)

root.mainloop()

simple calculator in python

#Simple Calculator Program in Python by Rupesh Singh

def sum1(first_input, second_input):    # Sum function "+"
    result1 = first_input + second_input
    print("Your Answer is:-", result1)
    return

def minus(first_input, second_input):    # Minus function "-"
    result2 = first_input - second_input
    print("Your Answer is:-", result2)
    return

def multi(first_input, second_input):    # Multiplication function "*"
    result3 = first_input * second_input
    print("Your Answer is:-", result3)
    return

def div(first_input, second_input):    # Division function "/"
    result4 = first_input / second_input
    result4 = float(round(result4))
    print("Your Answer is:-", result4)
    return

# User Input
first_input = int(input("Enter your 1st Input:- "))
command = input("What you want to do (+, -, *, /):- ")
second_input = int(input("enter your 2nd Input:- "))

if command == "+":
    sum1(first_input, second_input)
elif command == "-":
    minus(first_input, second_input)
elif command == "*":
    multi(first_input, second_input)
elif command == "/":
    div(first_input, second_input)
else:
    print("Command Error!")