Question

7- (50 points) Write a simple calculator in Python which supports four basic mathematical operators (1.e. + - / *). You need to define a module which supports addition, deletion, multiplication and subtraction. Then import your module to your calculator file and use it in your code. The following example shows how your basic calculator needs to work. Select operation: 1.Add 2.Subtract 3.Multiply 4.Divide Enter your choice(1/2/3/4): 3 Enter first number: 12 Enter second number: 14 12 * 14 = 168

Answer 1

Please find the code as below:

Module to be used for basic maths functions - calculation.py

def add(num1, num2):
return num1 + num2

def subtract(num1, num2):
return num1 - num2

def multiply(num1, num2):
return num1 * num2
  
def divide(num1, num2):
return num1 / num2

Main code file to be executed - basic_calculation.py

import calculation

print("Select operation:")   
print("1.Add")
print("2.Subtract")
print("3.Multiply")
print("4.Divide")
  
user_input = input("Enter your choice(1/2/3/4):")
  
number_1 = int(input("Enter first number:"))
number_2 = int(input("Enter second number:"))
  
print(user_input)
if user_input == 1:
print(str(number_1) + '+' + str(number_2) + '=' +
str(calculation.add(number_1, number_2)))
  
elif user_input == 2:
print(str(number_1) + '-' + str(number_2) + '=' +
str(calculation.subtract(number_1, number_2)))
  
elif user_input == 3:
print(str(number_1) + '*' + str(number_2) + '=' +
str(calculation.multiply(number_1, number_2)))
  
elif user_input == 4:
print(str(number_1) + '/' + str(number_2) + '=' +
str(calculation.divide(number_1, number_2)))
else:
print("Invalid input")

OUTPUT

Select operation: 1. Add 2. Subtract 3. Multiply 4.Divide Enter your choice(1/2/3/4):1 Enter first number: 12 Enter second number:12 12+12=24

Select operation: 1. Add 2. Subtract 3. Multiply 4.Divide Enter your choice(1/2/3/4):2 Enter first number: 12 Enter second number:12 12-12=0

Select operation: 1. Add 2. Subtract 3.Multiply 4.Divide Enter your choice(1/2/3/4):3 Enter first number: 12 Enter second number: 12 12*12=144

Select operation: 1. Add 2. Subtract 3. Multiply 4.Divide Enter your choice(1/2/3/4):4 Enter first number: 12 Enter second number:12 12/12=1