old_contents: """
  Global settings for pymatgen.
  """
  
  import os
  
  try:
      import ruamel.yaml as yaml
  except ImportError:
      try:
          import ruamel_yaml as yaml  # type: ignore  # noqa
      except ImportError:
          import yaml  # type: ignore # noqa
  
  SETTINGS_FILE = os.path.join(os.path.expanduser("~"), ".pmgrc.yaml")
  
  
  def _load_pmg_settings():
      try:
          with open(SETTINGS_FILE, "rt") as f:
              d = yaml.safe_load(f)
      except IOError:
          # If there are any errors, default to using environment variables
          # if present.
          d = {}
          for k, v in os.environ.items():
              if k.startswith("PMG_"):
                  d[k] = v
              elif k in ["VASP_PSP_DIR", "MAPI_KEY", "DEFAULT_FUNCTIONAL"]:
                  d["PMG_" + k] = v
      d = d or {}
      return dict(d)
  
  
  SETTINGS = _load_pmg_settings()
  
new_contents: """
  Global settings for pymatgen.
  """
  
  import os
  
  try:
      import ruamel.yaml as yaml
  except ImportError:
      try:
          import ruamel_yaml as yaml  # type: ignore  # noqa
      except ImportError:
          import yaml  # type: ignore # noqa
  
  SETTINGS_FILE = os.path.join(os.path.expanduser("~"), ".pmgrc.yaml")
  
  
  def _load_pmg_settings():
      try:
          with open(SETTINGS_FILE, "rt") as f:
              d = yaml.safe_load(f)
      except IOError:
          # If there are any errors, default to using environment variables
          # if present.
          d = {}
          for k, v in os.environ.items():
              if k.startswith("PMG_"):
                  d[k] = v
              elif k in ["VASP_PSP_DIR", "MAPI_KEY", "DEFAULT_FUNCTIONAL"]:
                  d["PMG_" + k] = v
      d = d or {}
      return dict(d)
  
  
  SETTINGS = _load_pmg_settings()
  locals().update(SETTINGS)
  
subject: Allow settings to be obtained via pymatgen.settings.PMG_MAPI_KEY