gh-125522: remove bare except usage in Lib/_pyio.py

[Lee-W]

• Issue: IDLE - remove all bare excepts #59518

• Issue: avoid bare except: in stdlib #125522

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[picnixz]

1. This is not related to IDLE.
2. Those bare excepts seemcorrect as we're reraising the exceptions. I think we already took care of this in avoid bare except: in stdlib #125522

[Lee-W]

Got it. Thanks! I thought we were supposed to eliminate all these occurrences. Thanks for the reminder!

[picnixz]

No worries. There are some occurrences that need to be eliminated but others can be legitimate.

[Lee-W]

No worries. There are some occurrences that need to be eliminated but others can be legitimate.

btw, Should we try except Exception or except BaseException for this? If not, I will start looking into the IDLE ones. Thanks!