class_docstr: python metrix unittest 
class_docstr_tok: ["python","metrix","unittest"]
docstr: test crf metrics 
docstr_tok: ["test","crf","metrics"]
code: def test_crf_metrics(self):
      """test crf metrics"""
      config = utils.load_config(self.config_file_crf)
      metrics3 = metrics.get_metrics(
          config, y_true=[self.true_label], y_pred=[self.pred1]
      )
      # metrics3: one string. Text summary of the precision, recall, F1 score for each class.
      # res3 = metrics3['CrfCal']
      # print(res3)
      # for i, s in enumerate(res3):
      #   print(i, s)
      self.assertEqual("1.0000", metrics3["CrfCal"][67:73])
  
      metrics4 = metrics.get_metrics(
          config, y_true=[self.true_label], y_pred=[self.pred2]
      )
      self.assertEqual("0.0000", metrics4["CrfCal"][67:73])
  
file_path: delta/delta/utils/metrics/py_metrics_test.py
imports: import os
  from pathlib import Path
  import tempfile
  import numpy
  import delta.compat
  from delta import utils
  from delta.utils import metrics
  from delta import PACKAGE_ROOT_DIR
label_desc: Use image node_id 5 for calling the MetricTest obj's underlying member method code with example usage: obj.test_crf_metrics() without return types