> > Closing stdin is probably the best option here, but the original > problem was caused by a mixing of levels. > > On one level, you've got open(), which wants to sort of pretend that > an open file is an object, and that the operating system resource > involved is an implementation detail that can be cleaned up by the > garbage collector. > > On the other level, you've got spawnProcess, which is operating > entirely in terms of file descriptors as process-global state. > > Any time you want to open a file descriptor for spawnProcess to > consume, I suggest that you open it with os.open > <https://docs.python.org/2/library/os.html#os.open>, which just hands > you an integer and makes it your own problem to close it explicitly > with os.close <https://docs.python.org/2/library/os.html#os.close>; > this is operating at the same abstraction level and therefore less > error-prone.
That's useful to know, thanks. I'll remember it for next time! Peter.
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