code: def _reload_config():
      """
      Reload the configuration from environment variables, if necessary.
      """
      _env_reloader.update()
  
file_path: py-fftw/pyfftw/config.py
imports: from __future__ import print_function, division, absolute_import
  import os
  import multiprocessing
  import warnings
  from .pyfftw import _threading_type
label_desc: Use image node_id 1 for calling a global function with example usage: _reload_config() without return types