Context Managers in Python

Context Managers in Python — a practical guide to Python context managers with clear examples you can reuse in real projects.

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Short description

Context managers guarantee cleanup. Files, locks, and DB sessions commonly use them.

custom context manager

from contextlib import contextmanager

@contextmanager
def tag(name):
    print(f'<{name}>')
    yield
    print(f'</{name}>')

with tag('div'):
    print('content')