Kursinnehåll

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

Python Function Arguments: Overview of Parameters and Arguments

First of all, let`s learn what positional, keyword, and optional arguments are.

def add(a, b, c):
    return a + b + c

The example above uses positional arguments. If you pass a different number of arguments, an error will occur. To call the function add(1, 2, 3), you just pass the arguments by their positions. The positional argument is a mandatory one.

add(b=2, c=3, a=1)

Also, you can pass arguments using names. And there are keyword arguments. In this case, you do not need to follow the order of the arguments.


              1234
            
def add(a, b, c = 0):
    return a + b + c
print(add(1, 2))
print(add(1, 2, 3))

After giving a default value to the argument, it becomes an optional one. So, you may pass it, and if not, the function will use the default value.

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