Python Function to Print a Message

This function allows for easy printing of a message to the console. It incorporates input validation to ensure that the provided message is a string.

Code Implementation

def print_message(message):
    """
    Prints a given message to the console.

    Parameters:
    message (str): The message to be printed.

    Returns:
    None

    Raises:
    ValueError: If the input message is not a string.
    """
    # Validate the input is a string
    if not isinstance(message, str):
        raise ValueError("The message must be a string.")

    # Print the message to the console
    print(message)

Code Explanation

• Imports: This specific function does not require any external libraries for its operation, focusing solely on built-in Python functionality.

• Docstring: The docstring clearly outlines the function’s purpose, parameters, return type, and potential exceptions that might be raised.

• Input Validation: The function checks if the message is a string. If not, it raises a ValueError to alert the user about incorrect input.

• Core Logic: If the input is valid, the message is printed to the console using the print() function.

Example Usage

Below is an illustration of how the print_message function can be utilized in a real-world scenario.

# Example of correct usage
try:
    print_message("Hello, World!")
except ValueError as ve:
    print(f"Error: {ve}")

# Example of incorrect usage
try:
    print_message(12345)  # This will raise a ValueError
except ValueError as ve:
    print(f"Error: {ve}")

Summary

This function provides a simple and effective solution to print messages while ensuring input validation. It is crucial to validate types in functions to maintain data integrity and prevent runtime errors. For further learning on best practices in coding and data science, consider resources available on the Enterprise DNA Platform.