how to make a calculator using python

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 

1#My Personal Python calculator
2print("My Personal Python calculator")
3#inputs
4num1 = int(input('Enter the first number:  '))
5num2 = int(input('Enter the second number:  '))
6#opration req
7opr = input('Enter the type of operation you want to perform between your chosen two numbers:  ')
8#calculation
9if opr=='+':
10    ans = num1 + num2
11    # displaying the answer
12    print(f'Your final answer is {ans}')
13elif opr == '- ':
14    ans = num1 - num2
15    # displaying the answer
16    print(f'Your final answer is {ans}')
17elif opr=='*':
18    ans = num1 * num2;
19    # displaying the answer
20    print(f'Your final answer is {ans}')
21elif opr=='/':
22    ans = num1 / num2
23    # displaying the answer
24    print(f'Your final answer is {ans}')
25else:
26    print('Invalid Entry!!!')

1#You can change Text at Inputs
2
3num1 = float(input("Enter Firt Number:"))
4num2 = float(input("Enter Second Number"))
5
6result= 0
7op = str(input("Enter an op(operator)"))
8#Gets Input Type--------
9try:
10  #U can make this in while loop ;-)
11  if op=="+":
12    result = num1 + num2
13  else if op=="-":
14    result = num1 - num2
15  else if op=="*":
16    result = num1 * num2
17  else if op=="/":
18    result = num1 / num2
19  else:
20      print("Invalid Input")
21  print("The result is " + result)
22except ZeroDivisionError:
23  print("U cant do that")
24

1num1 = input("Enter a Number : ")
2num2 = input("Enter a Number : ")
3result = (num1 * num2)
4print(result)
5# And then print out the result

1
2# Define variables for number inputs..
3num1 = int(input("Enter first number: "))
4num2 = int(input("Enter second number: "))
5
6# Input for operators
7op = input("Enter operator: ")
8
9# Functions for operations
10
11
12def add(num1, num2):
13    print('Result: ', num1 + num2)
14
15
16def subtract(num1, num2):
17    print('Result: ', num1 - num2)
18
19
20def multiply(num1, num2):
21    print('Result: ', num1 * num2)
22
23
24def division(num1, num2):
25    print('Result: ', num1 / num2)
26
27
28# Using the functions
29if op == '+':
30    add(num1=num1, num2=num2)
31elif op == '-':
32    subtract(num1=num1, num2=num2)
33elif op == '*':
34    multiply(num1=num1, num2=num2)
35elif op == '/':
36    division(num1=num1, num2=num2)
37else:
38    print('Invalid operator')
39

1#no gui
2
3def  add(a,b):
4    result=a+b
5    print(result)
6
7def sub(a,b):
8    resulf=a-b
9    print(resulf)
10
11def mul(a,b):
12    resulf=a*b
13    print(resulf)
14
15def div(a,b):
16    resulf=a/b
17    print(resulf)
18
19a=int(input("enter th first number: "))
20b=int(input("enter th second number: "))
21op=input("enter the sign: ")
22
23if op=="+":
24    add(a,b)
25
26elif op=="-":
27    sub(a,b)    
28
29elif op=="*":
30    mul(a,b)  
31
32elif op=="/":
33    div(a,b)    
34
35else:
36    print("invalid")