class_docstr: Allows setting different environment variables in threads.
class_docstr_tok: ["Allows","setting","different","environment","variables","in","threads","."]
code: def _setup_thread(self):
      if getattr(self.thread_local, "environ", None) is None:
          self.thread_local.environ = self.initial_env_vars.copy()
  
file_path: keras-tuner/keras_tuner/test_utils/mock_distribute.py
imports: import os
  import sys
  import threading
  from unittest import mock
  import portpicker
  import six
label_desc: Use image node_id 2 for calling the MockEnvVars obj's underlying member method code with example usage: obj._setup_thread() without return types