Return the exception raised by the call that the future represents. Args: timeout: The number of seconds to wait for the exception if the future isn't done. If None, then there is no limit on the wait time. Returns: The except
(self, timeout=None)
| 461 | self = None |
| 462 | |
| 463 | def exception(self, timeout=None): |
| 464 | """Return the exception raised by the call that the future represents. |
| 465 | |
| 466 | Args: |
| 467 | timeout: The number of seconds to wait for the exception if the |
| 468 | future isn't done. If None, then there is no limit on the wait |
| 469 | time. |
| 470 | |
| 471 | Returns: |
| 472 | The exception raised by the call that the future represents or None |
| 473 | if the call completed without raising. |
| 474 | |
| 475 | Raises: |
| 476 | CancelledError: If the future was cancelled. |
| 477 | TimeoutError: If the future didn't finish executing before the given |
| 478 | timeout. |
| 479 | """ |
| 480 | |
| 481 | with self._condition: |
| 482 | if self._state in [CANCELLED, CANCELLED_AND_NOTIFIED]: |
| 483 | raise CancelledError() |
| 484 | elif self._state == FINISHED: |
| 485 | return self._exception |
| 486 | |
| 487 | self._condition.wait(timeout) |
| 488 | |
| 489 | if self._state in [CANCELLED, CANCELLED_AND_NOTIFIED]: |
| 490 | raise CancelledError() |
| 491 | elif self._state == FINISHED: |
| 492 | return self._exception |
| 493 | else: |
| 494 | raise TimeoutError() |
| 495 | |
| 496 | # The following methods should only be used by Executors and in tests. |
| 497 | def set_running_or_notify_cancel(self): |
no test coverage detected