class t(str):
def __len__(self):
return 0
t = t('123')
if t:
print('y')
else:
print('n')
print(t)
Y2xhc3MgdChzdHIpOgoKICAgIGRlZiBfX2xlbl9fKHNlbGYpOgogICAgICAgIHJldHVybiAwCgoKdCA9IHQoJzEyMycpCmlmIHQ6CiAgICBwcmludCgneScpCmVsc2U6CiAgICBwcmludCgnbicpCgpwcmludCh0KQ==