Python contextlib Explained | Python OOP Series #18

Published: 19 June 2026
on channel: MLOrbit

Writing __enter__() and __exit__() for every context manager can become repetitive.

In this video, you'll learn how Python's contextlib module allows you to create context managers using simple generator functions and the @contextmanager decorator.

We'll cover:

• What contextlib is
• Why class-based context managers can be verbose
• The @contextmanager decorator
• Generator-based context managers
• Using yield for setup and cleanup
• How context managers work behind the scenes
• Exception handling with try/finally
• Database connection examples
• Real-world production use cases

By the end of this lesson, you'll understand the modern Pythonic approach to creating context managers and managing resources safely.

Python OOP Series:

#1 Classes & Objects
#2 Class vs Instance Attributes
#3 Encapsulation
#4 Inheritance
#5 Types of Inheritance
#6 Method Overriding
#7 Polymorphism
#8 Abstract Base Classes (ABC)
#9 Dunder Methods
#10 __len__() & __getitem__()
#11 Operator Overloading
#12 Decorators Explained
#13 Production-Ready Decorators
#14 Generators Explained
#15 Generator Expressions & Data Pipelines
#16 Context Managers Explained
#17 Build Your Own Context Managers
#18 Python contextlib Explained
#19 Type Hints Explained (Coming Next)

Next Video:

We'll learn how type hints make Python code easier to understand, maintain, and scale in professional software projects.

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