code: def run_notebook(self, nb, f):
          
  
          if PYTHON_MAJOR_VERSION == 3:
              kernel_name = 'python3'
          elif PYTHON_MAJOR_VERSION == 2:
              kernel_name = 'python2'
          else:
              raise Exception('Only Python 2 and 3 are supported')
          ep = ExecutePreprocessor(timeout=600, kernel_name=kernel_name)
          try:
              ep.preprocess(nb, {'metadata': {'path': '.'}})
          except CellExecutionError:
              msg = 'Error executing the notebook "%s".\n\n' % f.name
              msg += 'See notebook "%s" for the traceback.' % f.name
              print(msg)
              raise
          finally:
              nbformat.write(nb, f)
docs: Runs a loaded notebook file.