this post was submitted on 12 Sep 2023
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Has using 'thing = liststr <>' instead of 'thing: list[str] = []' any downsides? (feddit.de)
submitted 1 year ago* (last edited 1 year ago) by [email protected] to c/python
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I have seen some people prefer to create a list of strings by using thing = list[str]() instead of thing: list[str] = []. I think it looks kinda weird, but maybe that's just because I have never seen that syntax before. Does that have any downsides?

It is also possible to use this for dicts: thing = dict[str, SomeClass](). Looks equally weird to me. Is that widely used? Would you use it? Would you point it out in a code review?

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[โ€“] chemacortes 8 points 1 year ago (1 children)

With the dump function:

from ast import dump, parse

st = parse("thing = list[str]()")
print(dump(st, indent=4))

st = parse("thing: list[str] = []")
print(dump(st, indent=4))