• Martin Teichmann's avatar
    bpo-30306: release arguments of contextmanager (GH-1500) · dd0e087e
    Martin Teichmann yazdı
    The arguments to a generator function which is declared as a
    contextmanager are stored inside the context manager, and
    thus are kept alive, even when it is used as a regular context
    manager, and not as a function decorator (where it needs
    the original arguments to recreate the generator on each
    call).
    
    This is a possible unnecessary memory leak, so this changes
    contextmanager.__enter__ to release the saved arguments,
    as that method being called means that particular CM instance
    isn't going to need to recreate the underlying generator.
    
    Patch by Martin Teichmann.
    dd0e087e
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