Anticipate

Expect the unexpected, but get what you want.

@anticipate(int)
def get_int():
  return '1'

assert get_int() == 1

@anticipate(str)
def get_str():
  return 22

assert get_str() == '22'

@anticipate([str])
def get_strs(*args):
  return args

assert list(get_strs(1, 2, 3)) == ['1', '2', '3']

Works much better with your own objects or with SpringField