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Python Metaprogramming & Introspection🔮

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Python 3.14

Master the dynamic nature of Python to write frameworks and libraries that generate code at runtime.

6

Sections

19

Lessons

18

Challenges

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19 lessons and 18 challenges, all 100% free.

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Decorator Fundamentals

Preserving Function Metadata

Wraps Purpose Quiz(Sign in required)

Intermediate+20 Mana

Parametrized Decorators

Class Decorators

Decorator Execution Order(Sign in required)

Intermediate+20 Mana

Parametrized Decorator Levels(Sign in required)

Advanced+30 Mana

The Descriptor Protocol

Data vs Non-Data Descriptors

Descriptor Method Quiz(Sign in required)

Intermediate+20 Mana

Building Practical Descriptors

Set Name Quiz(Sign in required)

Advanced+30 Mana

Descriptor Lookup Order(Sign in required)

Intermediate+20 Mana

Understanding Metaclasses

__new__ vs __init__ vs __call__

Metaclass Default Quiz(Sign in required)

Intermediate+20 Mana

__init_subclass__ as Alternative

Metaclass Call Quiz(Sign in required)

Advanced+30 Mana

Metaclass Lifecycle Order(Sign in required)

Intermediate+20 Mana

The Inspect Module

getattr, setattr & the MRO

Inspect Signature Quiz(Sign in required)

Intermediate+20 Mana

The annotationlib Module (Python 3.14)

Stack Frame Access(Sign in required)

Advanced+30 Mana

MRO & Attribute Lookup Order(Sign in required)

Intermediate+20 Mana

Parsing Code with AST

AST Node Types & Visitors

AST Parse Quiz(Sign in required)

Intermediate+20 Mana

AST Transformers

AST Walk Purpose(Sign in required)

Advanced+30 Mana

AST Transform Pipeline(Sign in required)

Intermediate+20 Mana

The compile() Function & Code Objects

Eval vs Exec Quiz(Sign in required)

Intermediate+20 Mana

Template-Based Code Generation

Eval Safety Quiz(Sign in required)

Advanced+30 Mana

compile() Modes Matching(Sign in required)

Intermediate+20 Mana

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19 interactive lessons and 18 hands-on challenges — learn in VS Code, Cursor, or the web.