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+--- Thread: with os.open? (/thread-18719.html)
with os.open? - Skaperen - May-28-2019
i have many cases where i need to call os.open, do something with that file descriptor, then close it. is there a way to do that using a with statement? what about using with with an object of my own creation? is there a specific method to implement?
RE: with os.open? - heiner55 - May-29-2019
https://docs.python.org/3/reference/compound_stmts.html#the-with-statement
or
https://stackoverflow.com/questions/1984325/explaining-pythons-enter-and-exit
Or PEP:
https://www.python.org/dev/peps/pep-0343/
RE: with os.open? - Gribouillis - May-29-2019
See also contextlib.contextmanager for a simplified interface and also contextlib.closing and the like
import contextlib
@contextlib.contextmanager
def my_open(*args, **kwargs):
fd = os.open(*args, **kwargs)
try:
yield fd
finally:
os.close(fd)
with my_open(my_thing) as desc:
...
RE: with os.open? - heiner55 - May-30-2019
Thanks, I didn't know that.