twisted.internet.utils._UnexpectedErrorOutput(IOError) class documentationtwisted.internet.utils
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      Standard error data was received where it was not expected.  This is a subclass of IOError to preserve backward compatibility with the previous error behavior of getProcessOutput.
| Instance Variable | processEnded | A Deferred which will fire when the process which produced the data on stderr has ended (exited and all file descriptors closed). | 
  
| Method | __init__ | Undocumented | 
Deferred which will fire when the process which produced the data on stderr has ended (exited and all file descriptors closed).