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Comprehensions & generators

List/dict/set comprehensions, generator expressions, and lazy iteration.

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Comprehensions & generators medium

How to Create a Generator Context Manager in Python with contextlib

Create a custom context manager with the @contextlib.contextmanager decorator to manage resources using a generator function.

contextlib context-manager generator
Python 
import contextlib

@contextlib.contextmanager
def temporary_directory():
    """Yield a string and clean up after the block exits."""
    print("Creating temp directory...")
    dir_name = "/tmp/example"
    try:
        yield dir_name
    finally:
        print(f"Removing {dir_name}...")

if __name__ == "__main__":
 …
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Comprehensions & generators — Python code examples

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