How to Get Keyword Arguments in Python

Keyword arguments (**kwargs) in Python allow you to pass a variable number of named parameters to a function. This powerful feature enhances flexibility and readability in your code. Here’s how to use them effectively.

Understanding Keyword Arguments

Keyword arguments are passed to a function as a dictionary, where keys are parameter names and values are the arguments. They are prefixed with ** in the function definition.

def example_function(**kwargs):
    for key, value in kwargs.items():
        print(f"{key}: {value}")

How to Extract Keyword Arguments

To access keyword arguments inside a function, iterate through the kwargs dictionary or access specific keys directly.

def greet(**kwargs):
    name = kwargs.get('name', 'Guest')
    print(f"Hello, {name}!")

Common Use Cases

Keyword arguments are ideal for:

• Handling optional parameters
• Extending function behavior without breaking existing calls
• Passing configuration settings dynamically

Best Practices

Always document expected keyword arguments and provide default values where applicable to avoid runtime errors.