> > I try with +foo in place of ~foo. > +foo seems a lot better to me than ~foo, but i still lean towards `foo | None` as "good enough". it's 3 fewer characters than `Optional[foo]`, or 30 fewer if you include the full removal of `from typing import Optional`. the additional gain of +foo is only 6 characters.
i suppose 6 could be significant if you are hitting up against a line length limit. +foo definitely seems to say "foo, plus something else" to me much more than ~foo.
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