This article provides a beginner-level guide to creating a calculator program in Python. It covers the basics of programming in Python and provides step-by-step instructions on how to create a calculator program. The article also outlines tips and best practices for creating a calculator program in Python.

Here's an example of a simple calculator in Python that performs basic arithmetic operations (addition, subtraction, multiplication, and division). We'll build it step by step with explanations.

Step 1: Create a new Python file. Create a new file in your preferred Python development environment and give it a meaningful name, such as "calculator.py".

Step 2: Define functions for each arithmetic operation. In this step, we'll define four functions for each arithmetic operation: addition, subtraction, multiplication, and division. Here's an example implementation:

def add(a, b):
return a + b

def subtract(a, b):
return a - b

def multiply(a, b):
return a * b

def divide(a, b):
if b == 0:
return "Error: Cannot divide by zero"
return a / b

In the code above, we define four functions, add, subtract, multiply, and divide, each taking two arguments a and b, representing the two numbers on which the arithmetic operation will be performed. The functions return the result of the respective operation.Step 3: Implement user input and output.

Step 3: Implement user input and output.In this step, we'll take user input for the numbers and the desired operation, call the appropriate function based on the user's choice, and display the result. Here's an example implementation:

def calculator():
while True:
try:

Take user input for the numbers and operation

num1 = float(input("Enter the first number: "))
num2 = float(input("Enter the second number: "))
operation = input("Enter the operation (+, -, *, /): ")

Call the appropriate function based on the user's choice

if operation == '+':
result = add(num1, num2)
elif operation == '-':
result = subtract(num1, num2)
elif operation == '*':
result = multiply(num1, num2)
elif operation == '/':
result = divide(num1, num2)
else:
print("Invalid operation. Please try again.")
continue

Display the result

print("Result: ", result)

Ask the user if they want to perform another calculation

another_calculation = input("Do you want to perform another calculation? (y/n): ")
if another_calculation.lower() != 'y':
break
except ValueError:
print("Invalid input. Please enter valid numbers.")

In the code above, we define a calculator() function that runs in an infinite loop, taking user input for the numbers and operation, calling the appropriate function based on the user's choice, and displaying the result. If the user wants to perform another calculation, the loop continues, otherwise it breaks and the calculator program terminates.

Step 4: Run the calculator. At the end of the Python file, call the calculator() function to start the calculator program when the file is run.

Check This Full Code : https://dskcode.com/a-beginners-guide-to-making-a-calculator-program-in-python