How to Build a Basic Calculator using Python: A Step-by-Step Guide for Beginners

 

Learn how to create a simple basic calculator using Python programming language Boost your programming skills and optimize your code for search engines with our expert tips and . Get the complete code and step-by-step instructions for building your own calculator

This code takes in user input for the calculation operation to be performed and the two numbers to be used. It then uses an if-elif block to perform the calculation based on the operator entered and returns the result. If an invalid operator is entered, it returns an error message.

CODE:-

def calculate():

#Take input from the user

 opt = input("Please enter the operation you would like to perform (+, -, *, /): ")

 first_number = float(input("Please enter the first number: "))

 second_number = float(input("Please enter the second number: "))

# Perform the calculation based on the operator entered

 if opt == "+":

    result = first_number + second_number

 elif opt == "-":

     result = first_number - second_number

 elif opt == "*":

     result = first_number * second_number

 elif opt == "/":

      result = first_number / second_number

# If an invalid operator is entered, return an error message_number

 else:

  return print("You have entered an invalid operator. Please enter a valid operator (+, -, *, /).")

# Return the result

 return result

# Call the function to start the calculator

print(calculate())

Output:-

Please enter the operation you would like to perform (+, -, *, /): +

Please enter the first number: 12

Please enter the second number: 14

26.0