What is the common header format of Python files?

The common header format of Python files is a simple and essential element that provides context and documentation. In Python, we commonly use a docstring as the header format − a special comment enclosed within triple quotes placed at the beginning of the script.

Standard Header Structure

The standard Python file header uses a docstring with key information about the script ?

"""
File: filename.py
Author: Your Name
Date: Date of creation/modification
Description: A brief explanation of what this script does.
"""

Header Components

• File: The name of the Python file (e.g., filename.py) for clear identification
• Author: Credits the individual who created or modified the script
• Date: Creation or modification date for version tracking
• Description: Concise summary of the script's purpose and functionality

Basic Script with Header

Here's a simple Python script demonstrating proper header format ?

"""
File: hello.py
Author: John Doe
Date: 2025-01-15
Description: A simple Python script to print "Hello, world!"
"""

print("Hello, world!")

Hello, world!

Script with Functions and Header

A more complex example showing functions with proper documentation ?

"""
File: math_operations.py
Author: Jane Smith
Date: 2025-01-15
Description: A Python script to perform basic math operations.
"""

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

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

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

def divide_numbers(a, b):
    return a / b

# Example usage
result = add_numbers(5, 3)
print("Result of addition:", result)

Result of addition: 8

Script with Class and Header

Example showing a class definition with proper header documentation ?

"""
File: student.py
Author: Michael Johnson
Date: 2025-01-15
Description: A Python script defining a Student class and its methods.
"""

class Student:
    def __init__(self, name, age):
        self.name = name
        self.age = age

    def greet(self):
        return f"Hello, my name is {self.name} and I'm {self.age} years old."

# Example usage
student1 = Student("Riyaansh", 20)
print(student1.greet())

Hello, my name is Riyaansh and I'm 20 years old.

Temperature Converter Example

A practical example showing temperature conversion functions with header ?

"""
File: temperature_converter.py
Author: Emily Davis
Date: 2025-01-15
Description: A Python script to convert temperatures between Celsius and Fahrenheit.
"""

def celsius_to_fahrenheit(celsius):
    fahrenheit = (celsius * 9/5) + 32
    return fahrenheit

def fahrenheit_to_celsius(fahrenheit):
    celsius = (fahrenheit - 32) * 5/9
    return celsius

# Example usage
temperature_celsius = 35
temperature_fahrenheit = celsius_to_fahrenheit(temperature_celsius)
print(f"{temperature_celsius} degrees Celsius is equal to {temperature_fahrenheit:.2f} degrees Fahrenheit.")

35 degrees Celsius is equal to 95.00 degrees Fahrenheit.

Conclusion

Python file headers using docstrings provide essential documentation and improve code readability. Always include file name, author, date, and description to maintain professional coding standards and facilitate collaboration.