Python · Context Managers

contextlib.redirect_stdout(f) captures print output. You now need to capture the error stream instead — what do you use?

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More in Context Managers

A context manager class must implement which two magic methods, and when is each called?

Why prefer with open(...) as f: over f = open(...) followed by manual cleanup?

In with EXPR as name:, what gets bound to name — the object in EXPR, or something else?

If the with body raises an exception, does __exit__ still run?

What are the three arguments passed to __exit__, and what are they when no exception occurred?

Inside __exit__, what does returning True do to an exception raised in the with body?

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