class_docstr: A tracker which stores everything in Python dictionaries.
  
  Example Usage: get default configuration
  
  .. code-block:: python
  
      from pykeen.pipeline import pipeline
      from pykeen.trackers import PythonResultTracker
  
      tracker = PythonResultTracker()
      result = pipeline(
          dataset="nations",
          model="PairRE",
          result_tracker=tracker,
      )
      print("Default configuration:")
      for k, v in tracker.configuration.items():
          print(f"{k:20} = {v}")
docstr: Initialize the tracker.
docstr_tok: ["Initialize","the","tracker","."]
code: def __init__(self, store_metrics: bool = True) -> None:
      """Initialize the tracker."""
      super().__init__()
      self.store_metrics = store_metrics
      self.configuration = dict()
      self.metrics = defaultdict(dict)
      self.run_name = None
  
imports: import logging
  import re
  from collections import defaultdict
  from typing import Any, Iterable, List, Mapping, MutableMapping, Optional, Pattern, Union
  from tqdm.auto import tqdm
  from ..utils import flatten_dictionary
label_desc: Use image node_id 1 to create a new PythonResultTracker object from inherited base classes: ResultTracker with example: obj = PythonResultTracker(store_metrics)