[Python-ideas] Conditional context manager

[Chris Angelico]

On Sun, Oct 2, 2016 at 5:07 AM, Neil Girdhar <mistersheik at gmail.com> wrote:
> I suggest a more compact notation:
>
>     with cm_function() as cm if condition:
>         suite()
>

The simplest way would be to make a conditional version of the context manager.

@contextlib.contextmanager
def maybe_cm(state):
    if state:
        with cm_function() as cm:
            yield cm
    else:
        yield None

I believe that'll work.

ChrisA