contextlib.closing()

contextlib.closing(thing)

Return a context manager that closes thing upon completion of the block. This is basically equivalent to:

from contextlib import contextmanager
 
@contextmanager
def closing(thing):
    try:
        yield thing
    finally:
        thing.close()

And lets you write code like this:

from contextlib import closing
from urllib.request import urlopen
 
with closing(urlopen('http://www.python.org')) as page:
    for line in page:
        print(line)

without needing to explicitly close page. Even if an error occurs, page.close() will be called when the with block is exited.

Links:

https://docs.python.org/3.5/library/contextlib.html#contextlib.closing

doc_python

2025-01-10 15:47:30

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