On Thu, Jun 25, 2020 at 8:31 PM Richard Damon Richard@damon-family.org wrote:
I thought _ was also commonly used as:
first, -, last = (1, 2, 3)
as a generic don't care about assignment. I guess since the above will create a local, so not overwrite a 'global' function _ for translations, so the above usage works as long as that function (or whatever namespace you are in) doesn't use _ for translations. As long as the bindings in match also make the symbol a local (which seems reasonable) then you would get a similar restriction.
The PEP currently says:
"The named class must inherit from type. It may be a single name or a dotted name (e.g. some_mod.SomeClass or mod.pkg.Class). The leading name must not be _, so e.g. _(...) and _.C(...) are invalid. Use object(foo=_) to check whether the matched object has an attribute foo."