# python >= 3.6

class Foo:
    bar = 1

#? 10 int()
f'{Foo.bar}'
#? 10 ['bar']
f'{Foo.bar}'
#? 10 int()
Fr'{Foo.bar'
#? 10 ['bar']
Fr'{Foo.bar'
#? int()
Fr'{Foo.bar
#? ['bar']
Fr'{Foo.bar