right now a goto would be useable

[Gribouillis]

Here is an ersatz of downward goto

from collections import defaultdict

goto = label = defaultdict(
    lambda: type('Goto', (Exception,), {})).__getitem__

def main(x):
    try:
        ...
        if x == 3:
            raise goto('spam')
        ...
    except label('spam'):
        print('Goto worked!')

if __name__ == '__main__':
    main(3)