twisted.python.log.err(_stuff=None, _why=None, **kw) function documentationtwisted.python.log
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Write a failure to the log.
The _stuff and _why parameters use an underscore prefix to lessen the chance of colliding with a keyword argument the application wishes to pass. It is intended that they be supplied with arguments passed positionally, not by keyword.
| Parameters | _stuff | The failure to log. If _stuff is None a new Failure will be created from the current exception state. If _stuff is an Exception instance it will be wrapped in a Failure. (type: None, Exception, or Failure.) |
| _why | The source of this failure. This will be logged along with _stuff and should describe the context in which the failure occurred. (type: str) |