Yes, it should be a function. stdout/stderr/stdin are different from other streams in that they're managed outside (by the OS and Python, not by your app) whereas an open should be used with with in simple cases if possible.
You can start treating them the same when you start writing to / reading from them and stop when you stop doing that. All that can nicely be stuck away in a function. That also enables you to call the actual I/O part with a different file-like thing, say a StringIO instance when testing.
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Yes, it should be a function. stdout/stderr/stdin are different from other streams in that they're managed outside (by the OS and Python, not by your app) whereas an open should be used with
within simple cases if possible.You can start treating them the same when you start writing to / reading from them and stop when you stop doing that. All that can nicely be stuck away in a function. That also enables you to call the actual I/O part with a different file-like thing, say a StringIO instance when testing.