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

Packing in Python: Grouping Multiple Values into a Single Variable

To pack multiple variables, you need to use the * iterable unpacking operator. Simply place an asterisk * before the variable, and it will pack any number of variables. Packing a variable is only possible within a tuple or a list.

a, b, *c = 1, 2, 3, 4, 5 # a = 1, b= 2, c = [3, 4, 5]
a, *b, c = 1, 2, 3, 4, 5 # a = 1, b = [2, 3, 4], c = 5
a, b, *c = 1, 2 # a = 1, b = 2, c = []
*a, b = 1, 2, 3 # a = [1, 2], b = 3

*a, = 1, 2, 3 # a = [1, 2, 3]
(*a,) = 1, 2, 3 # a = [1, 2, 3]
[*a] = 1, 2, 3 # a = [1, 2, 3]
*a = 1, 2, 3 # SyntaxError: starred assignment target must be in a list or tuple

But the SyntaxError will occur if to use more than one unpacking operator.


              1
            
*a, *b = 1, 2, 3, 4


              1
            
*a, *b, *c = 1, 2, 3

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