Irit Katriel added the comment:
In urllib.request, there are in a few places things like:
except OSError as msg:
raise OSError('socket error', msg).with_traceback(sys.exc_info()[2])
I imagine this predates chaining - is there a reason not to raise..from here
instead of wrapping the "
New submission from Irit Katriel :
Is there a reason for this raising, catching and reraising the exception here:
https://github.com/python/cpython/blob/main/Lib/urllib/parse.py#L934
rather than just:
if len(query) and not isinstance(query[0], tuple):
raise TypeError("not a valid non-str
