twisted.internet.defer.fail(result=None) function documentationtwisted.internet.defer
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Return a Deferred that has already had .errback(result) called.
See succeed's docstring for rationale.
| Parameters | result | The same argument that Deferred.errback takes. |
| Returns | (type: Deferred) | |
| Raises | NoCurrentExceptionError | If result is None but there is no current exception state. |