class_docstr: Base Evaluation class.
docstr: Process eval
docstr_tok: ["Process","eval"]
code: def __call__(self, parallel, args, case):
      """Process eval"""
      if self.verbose:
          f = "stdout" if self.verbose < 20 else "stderr"
          safe_print("Launching job", file=f)
          t0 = time()
  
      if "preprocess" in case or self._transformers:
          # Second test is for already fitted pipes - need to be cached
          if self.verbose >= 2:
              safe_print(self._print_prep_start(), file=f)
              t1 = time()
  
          self._run("transformers", parallel, args)
          if "preprocess" in case:
              self.collect(args["dir"], "transformers")
  
          if self.verbose >= 2:
              print_time(
                  t1, "{:<13} done".format("Preprocessing"), file=f
              )
  
      if "evaluate" in case:
          if self.verbose >= 2:
              safe_print(self._print_eval_start(), file=f)
              t1 = time()
  
          self._run("estimators", parallel, args)
          self.collect(args["dir"], "estimators")
  
          if self.verbose >= 2:
              print_time(t1, "{:<13} done".format("Evaluation"), file=f)
  
      if self.verbose:
          print_time(t0, "{:<13} done".format("Job"), file=f)
  
imports: from __future__ import division, with_statement
  import warnings
  import numpy
  from ._base_functions import parse_key, set_job, cat, check_scorer, make_learners, make_tansformers, check_instances
  from ..index import FoldIndex
  from ..parallel import ParallelEvaluation
  from ..parallel.base import BaseBackend, IndexMixin
  from ..metrics import Data, assemble_data
  from ..utils.formatting import _flatten, _check_instances
  from ..utils import print_time, safe_print, assert_correct_format
  from ..externals.joblib import delayed
  from ..externals.sklearn.base import clone
label_desc: Use image node_id 3 for calling the BaseEval obj's underlying member method code with example usage: obj.__call__(parallel, args, case) without return types