[Python-Dev] What's the status of PEP 505: None-aware operators? (original) (raw)

Tres Seaver tseaver at palladion.com
Thu Nov 30 13:45:07 EST 2017

On 11/29/2017 01:02 PM, Barry Warsaw wrote:

I don’t know whether I like any of this but I think a more natural spelling would be:

val = name.strip()[4:].upper() except (AttributeError, KeyError) as -1 which could devolve into: val = name.strip()[4:].upper() except KeyError as -1 or: val = name.strip()[4:].upper() except KeyError # Implicit as None

Of all the proposed spellings for the idea, this one feels most "normal" to me, too (I'm -0 on the idea as a whole).

I would not add any spelling for an explicit bare-except equivalent. You would have to write:

val = name.strip()[4:].upper() except Exception as -1

Wouldn't that really need to be this instead, for a true 'except:' equivalence:

val = name.strip()[4:].upper() except BaseException as -1

Tres.

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