On Sat, Feb 26, 2011 at 4:39 PM, Nick Coghlan <ncogh...@gmail.com> wrote:
> On Sat, Feb 26, 2011 at 10:52 PM, cool-RR <cool...@cool-rr.com> wrote: > > Hello, > > I noticed that the `TemporaryDirectory` context manager creates the > folder > > on `__init__` rather than on `__enter__`, resulting in complexity, bugs, > and > > hackarounds in `__del__`. I assume there's a good reason for this > decision. > > What is it? > > From the docstring: "This has the same behavior as mkdtemp but can be > used as a context manager." Like files, it *can* be used as a context > manager, but doesn't have to be. > > Also, the complexity wouldn't go away even if the directory creation > was delayed until the __enter__ invocation. People can still call > __enter__ directly, so __del__ would still be obliged to try to clear > things up as best it could. > > Cheers, > Nick. I think that if someone calls `__enter__` directly, he takes the responsibility of calling `__exit__`, so we don't really have to help him with `__del__`. But other than that I understand the motivation for making it start on `__init__` rather then `__enter__`. I'll just make my own version of it that will work on `__enter__` instead. Thanks, Ram.
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