class_docstr: A class representing an H2O Job.
class_docstr_tok: ["A","class","representing","an","H2O","Job","."]
docstr: Query the job status and show the progress bar, but then cancel immediately.
docstr_tok: ["Query","the","job","status","and","show","the","progress","bar",",","but","then","cancel","immediately","."]
code: def poll_once(self):
      """Query the job status and show the progress bar, but then cancel immediately."""
      self._poll_count = 1
      self.poll()
      self._poll_count = 10**10
      return self
  
file_path: h2o-3/h2o-py/h2o/job.py
imports: import functools
  import warnings
  import time
  import h2o
  from h2o.exceptions import H2OJobCancelled, H2OConnectionError, H2OResponseError, H2OServerError
  from h2o.utils.progressbar import ProgressBar, PBWString, PBWBar, PBWPercentage
  from h2o.utils.shared_utils import clamp
label_desc: Use image node_id 3 for calling the H2OJob obj's underlying member method code with example usage: obj.poll_once() and returns: self