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?
In addition to what others have said, collection literals are also faster.
list[str]()performs a function call that technically might not be the built-inlist. Where[]is always an empty list and it can be created with less overhead.