Re:What's Coming in Python 3.8
by mbreese on Wednesday July 17, 2019 @08:43PM
(#20465558)
It's not about experience vs inexperience... it's about code readability and being unsurprising.
is verbose, but quite readable. Given that it's the way things have been done since forever, it's also unsurprising.
Without knowing what the walrus operator is, it is not entirely clear what is going on here. := is only syntactic sugar, which is not what Python has ever been about.
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Python already has " as " operator that I think is very readable.
with open('file') as f:
... do something ...
if re.match(...) as m:
... do something ...If feel Go solves this in a much more readable way.
if m := re.match(...); m {
... do something ...
}
How is that more readable? It's identical except for ":" -> ";", and some extra symbols added. Needing to repeat "m" seems seems redundant, and particularly bad for readability as it moves the actual condition far away from the "if".
It is better IMO because it doesn't merge two things into one. It simply translates to `if <assignment>; <condition> { <body> }` as a generic rule. Variable used in condition may or may not be the same one in assignment. Bundling assignment and condition is what people don't like about this feature.