KnowCardPython · Context Managers
You have an object with a .close() method but no __enter__/__exit__. How do you use it with with?
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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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