a : int <EOL>
b <EOL>
c = 'no annotation' <EOL>
x : int = 10 <EOL>
y : str = 'annotation' <EOL>
z : tuple = ( 1 , 2 , 3 ) <EOL>
confirm_subscr = { } <EOL>
confirm_subscr [ 'test' ] = 'works' <EOL>