2-Minute Guide: Context Managers in Python

Context managers in Python are a powerful tool for managing resources, such as files or database connections. They ensure that resources are properly cleaned up after use, even if exceptions occur.

Using with open()

One common example of a context manager is the with open() statement:

with open('example.txt', 'r') as file:
    content = file.read()

This code opens a file, reads its content, and automatically closes the file when done, regardless of whether an exception occurs.

Custom Context Manager

You can also create a custom context manager using the __enter__ and __exit__ special methods:

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