Intermediate Python: Arguments, Scopes and Decorators

Intermediate Python: Arguments, Scopes and Decorators

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1. Packing and Unpacking

You'll find this topic enjoyable, and you'll learn how to pack and unpack values in a single assignment.

Packing and Unpacking Usage

Challenge: Dictionary Unpacking

Challenge: The Champions League

2. Arguments in Function

Explore the power of Python's function arguments, *args, **kwargs, and learn how to effectively use functions as arguments.

Arguments Overview

Challenge: Average Mark

Challenge: kwargs

3. Function as an Argument

Discover the higher-order functions and how functions can be passed as arguments to other functions in programming.

High-Order Functions

Lambda Function

Built-in Functions

4. Variable Scope

What is variable scope, and how did we manage without it before? This topic is essential for understanding the following subjects: Closures and Decorators. I assure you that this topic will be both enjoyable and practical. You will gain knowledge about local, nonlocal, and global variables.

Global Variable

Challenge: Modifying a Global Variable

Nested Functions

Nonlocal Variable

Challenge: Threshold Checker

5. Decorators

This section provides an in-depth exploration of Python decorators, a powerful feature that allows for the modification and enhancement of function behavior. Participants will learn how to write their own decorators, understand built-in decorators, and apply decorators in practical scenarios.

Introduction to Decorators

Challenge: Create Your Decorator

Decorators with Parameters

Chaining Decorators

Challenge: Basic Smores Recipe

Practical Examples of Decorator Usage

Course Content

Intermediate Python: Arguments, Scopes and Decorators

Intermediate Python: Arguments, Scopes and Decorators

Nonlocal Variable

So, now we understand the difference between global and local variables and have learned about nested functions. The <strong>nonlocal</strong> variable is used in nested functions. Let's look at an example:


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def outer_function():
    outer_var = 10 

    def inner_function():
        nonlocal outer_var
        outer_var += 5
        print("Nonlocal variable in inner function:", outer_var)

    inner_function()
    print("Nonlocal variable in outer function:", outer_var)

outer_function()

Just as with global variables, we cannot change the variable created in outer_function inside inner_function without using the special keyword <strong>nonlocal</strong>.

The output is:

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Section 4. Chapter 5

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