(self, fun, *args, **kwargs)
| 294 | return self.__evaluate__() |
| 295 | |
| 296 | def __then__(self, fun, *args, **kwargs): |
| 297 | if self.__evaluated__(): |
| 298 | return fun(*args, **kwargs) |
| 299 | from collections import deque |
| 300 | try: |
| 301 | pending = object.__getattribute__(self, '__pending__') |
| 302 | except AttributeError: |
| 303 | pending = None |
| 304 | if pending is None: |
| 305 | pending = deque() |
| 306 | object.__setattr__(self, '__pending__', pending) |
| 307 | pending.append((fun, args, kwargs)) |
| 308 | |
| 309 | def __evaluated__(self): |
| 310 | try: |