What is the output of
1 in [] in 'a'
and what is the output of
(1 in []) in 'a'
or
1 in ([] in 'a')
. . . . . . . . . . . . . . . . . . . . . . . . .
Answer
The first expression evaluates to False, because it gets evaluated as (1 in []) and ([] in 'a') (Manual, Source).
The second two expressions are invalid; they throw an error.