Contenuti del Corso

Intermediate Python Techniques

1. Mastering Packing and Unpacking in Python

Unpacking in Python: Extracting Values from Lists and Tuples Packing in Python: Grouping Multiple Values into a Single Variable Using Packing and Unpacking for Efficient Code in Python Challenge: Mastering Dictionary Unpacking in Python Challenge: The Champions League

2. Mastering Function Arguments in Python

Python Function Arguments: Overview of Parameters and Arguments Using *args in Python: Handling Variable-Length Positional Arguments Challenge: Calculating the Average Mark with *args Using **kwargs in Python: Flexible Keyword Arguments for Dynamic Functions Challenge: Mastering **kwargs in Python Functions

3. Function as an Argument in Python

High-Order Functions in Python: Passing Functions as Arguments Lambda Functions in Python: Writing Concise and Anonymous Functions Using Python Built-in Functions

4. Understanding Variable Scope in Python

Global Variables in Python: Accessing and Modifying Global Data Local Variables in Python: Understanding Function-Level Scope Challenge: Modifying a Global Variable in Python Nested Functions in Python: Scope and Accessibility Nonlocal Variables in Python: Working with Enclosed Scopes Python Closures: Retaining State in Nested Functions Challenge: Implementing a Threshold Checker with Closures

5. Mastering Python Decorators

Introduction to Python Decorators Python Decorator Syntax: Writing and Applying Decorators Challenge: Create Your First Python Decorator Using Decorators with Parameters in Python Chaining Multiple Decorators: Advanced Function Modifications Challenge: Basic Smores Recipe Practical Examples of Python Decorator Usage in Real Applications

Using *args in Python: Handling Variable-Length Positional Arguments

In Python, you can add any number of arguments to a function, and *args and **kwargs can be helpful.

We should remember that asterisks * help in packing and unpacking values.

Let’s use the same add function as in the previous chapter but with the use of *args.


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The difference is that you can pass any number of arguments to the function; even if you do not pass any arguments, the result will be 0, just like a calculator in your phone.

The function add receives any number of arguments and packs them into a tuple with the variable name args. The for loop goes through the tuple values and adds them to the result variable in the body of the function.

Note

You can use not only *args but any name. However, it is best practice to use the name args for arbitrary arguments.

Arbitrary arguments must appear after the positional and optional arguments.


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Sezione 2. Capitolo 2

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