simple python calculator

1from tkinter import *
2import random
3import time
4
5def btnClick(numbers):
6	global operator
7	operator = operator + str(numbers)
8	text_Input.set(operator)
9
10def bcd():
11	global operator
12	operator = ""
13	text_Input.set("")
14
15def bei():
16	global operator
17	sumup = str(eval(operator))
18	text_Input.set(sumup)
19	operator = sumup
20
21
22root = Tk()
23root.title("Calculator")
24root.resizable(False, False)
25
26operator = ""
27text_Input = StringVar()
28
29#AnsShow
30textDisplay = Entry(root, font = ('arial', 20, 'bold'), textvariable = text_Input, bd = 30, insertwidth = 4, bg = "red", justify = 'right')
31textDisplay.grid(columnspan = 4)
32
33#button
34btn7 = 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)
35
36btn8 = 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)
37
38btn9 = 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)
39
40Add = Button(root, padx = 16, bd = 8, fg = "black", bg = "red", font = ('arial', 20, 'bold'), text = "+", command = lambda:btnClick("+")).grid(row = 1, column = 3)
41
42#============================================================================================================================#
43btn4 = 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)
44
45btn5 = 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)
46
47btn6 = 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)
48
49Sub = Button(root, padx = 16, bd = 8, fg = "black", bg = "red", font = ('arial', 20, 'bold'), text = "-", command = lambda:btnClick("-")).grid(row = 2, column = 3)
50
51#===============================================================================================================================#
52btn1 = 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)
53
54btn2 = 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)
55
56btn3 = 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)
57
58Multiply = Button(root, padx = 16, bd = 8, fg = "black", bg = "red", font = ('arial', 20, 'bold'), text = "*", command = lambda:btnClick("*")).grid(row = 3, column = 3)
59
60#==================================================================================================================================#
61btn0 = 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)
62
63equal = Button(root, padx = 16, bd = 8, fg = "black", bg = "red", font = ('arial', 20, 'bold'), text = "=", command = bei).grid(row = 4, column = 1)
64
65divide = Button(root, padx = 16, bd = 8, fg = "black", bg = "red", font = ('arial', 20, 'bold'), text = "/", command = lambda:btnClick("/")).grid(row = 4, column = 2)
66
67clear = Button(root, padx = 16, bd = 8, fg = "black", bg = "red", font = ('arial', 20, 'bold'), text = "c", command = bcd).grid(row = 4, column = 3)
68
69root.mainloop()

1#Store number variables for the two numbers
2
3num1 = input('Enter first number: ')
4num2 = input('Enter second number: ')
5
6#the sum of the two numbers variable
7sum = float(num1) + float(num2)
8sum2 = float(num1) - float(num2)
9sum3 = float(num1) * float(num2)
10sum4 = float(num1) / float(num2)
11
12#what operator to use
13choice = input('Enter an operator, + = addition, - = subtraction, * = multiplication and / = division: ')
14#different sums based on the operators
15if choice == '+':
16  print('The sum of {0} and {1} is {2}'.format(num1, num2, sum))
17
18  if choice == '-':
19    print('The sum of {0} and {1} is {2}'.format(num1, num2, sum2))
20
21if choice == '*':
22    print('The sum of {0} and {1} is {2}'.format(num1, num2, sum3))
23
24if choice == '/':
25    print('The sum of {0} and {1} is {2}'.format(num1, num2, sum4))
26 

1Select operation.
21.Add
32.Subtract
43.Multiply
54.Divide
6Enter choice(1/2/3/4): 3
7Enter first number: 15
8Enter second number: 14
915.0 * 14.0 = 210.0
10

1print("Enter Your Choice 1(Add)/2(Sub)/3(Divide)/4(Multiply)")
2num = int(input())
3if num == 1:
4    print("Enter Number 1 : ")
5    add1  = int(input())
6    print("Enter Number 2 : ")
7    add2 = int(input())
8    sum = add1 + add2
9    print("The Sum Is ", sum)
10elif num == 2:
11    print("Enter Number 1 : ")
12    sub1  = int(input())
13    print("Enter Number 2 : ")
14    sub2 = int(input())
15    difference = sub1 - sub2
16    print("The Difference Is ", difference)
17elif num == 3:
18    print("Enter Number 1 : ")
19    div1  = float(input())
20    print("Enter Number 2 : ")
21    div2 = float(input())
22    division = div1 / div2
23    print("The Division Is ", division)
24elif num == 4:
25    print("Enter Number 1 : ")
26    mul1 = int(input())
27    print("Enter Number 2 : ")
28    mul2 = int(input())
29    multiply = mul1 * mul2
30    print("The Difference Is ", multiply)
31else:
32    print("enter a valid Number")

1# This will be one of the most advanced results you will find.
2
3# We will be using classes and simple operators like +,-,*,/
4
5class Calculator:
6  def addition(a,b):
7    return a + b
8
9  def subtraction(a,b):
10    if a<b:
11      return b - a
12    else:
13      return a - b
14
15  def multiplication(a,b):
16    return a * b
17
18  def division(a,b):	
19    if a<b:
20      return b / a
21    else:
22      return a / b
23
24# You can do this in terminal.
25<C:/Users/username>python
26>>> from main import Calculator
27>>> result = Calculator.[addition|subtraction|multiplication|division](anyNumber, anyNumber)
28>>> print(result)

1def mutiply (x):
2    return 5*x
3o = mutiply(10)
4print(o)