Python generator expression parentheses oddity

Question

I want to determine if a list contains a certain string, so I use a generator expression, like so:

g = (s for s in myList if s == myString)
any(g)
         


        

Answer 1

It's "legal", and expressly supported. The general rule is "((x)) is always the same as (x)" (even though (x) is not always the same as x of course,) and it's applied to generator expressions simply for convenience.