text: import importlib
  import os
  import sys
  import warnings
  
  from dynaconf.utils import RENAMED_VARS
  from dynaconf.utils import upperfy
  from dynaconf.utils import warn_deprecations
  from dynaconf.utils.files import find_file
  from dynaconf.utils.parse_conf import parse_conf_data
  from dynaconf.vendor.dotenv import load_dotenv
  
  
  def try_renamed(key, value, older_key, current_key):
      if value is None:
          if key == current_key:
              if older_key in os.environ:
                  warnings.warn(
                      f"{older_key} is deprecated please use {current_key}",
                      DeprecationWarning,
                  )
                  value = os.environ[older_key]
      return value
  
  
  def get(key, default=None):
      value = os.environ.get(upperfy(key))
  
      # compatibility with renamed variables
      for old, new in RENAMED_VARS.items():
          value = try_renamed(key, value, old, new)
  
      return (
          parse_conf_data(value, tomlfy=True, box_settings={})
          if value is not None
          else default
      )
  
  
  def start_dotenv(obj=None, root_path=None):
      # load_from_dotenv_if_installed
      obj = obj or {}
      _find_file = getattr(obj, "find_file", find_file)
      root_path = (
          root_path
          or getattr(obj, "_root_path", None)
          or get("ROOT_PATH_FOR_DYNACONF")
      )
  
      dotenv_path = (
          obj.get("DOTENV_PATH_FOR_DYNACONF")
          or get("DOTENV_PATH_FOR_DYNACONF")
          or _find_file(".env", project_root=root_path)
      )
  
      load_dotenv(
          dotenv_path,
          verbose=obj.get("DOTENV_VERBOSE_FOR_DYNACONF", False),
          override=obj.get("DOTENV_OVERRIDE_FOR_DYNACONF", False),
      )
  
      warn_deprecations(os.environ)
  
  
  def reload(load_dotenv=None, *args, **kwargs):
      if load_dotenv:
          start_dotenv(*args, **kwargs)
      importlib.reload(sys.modules[__name__])
  
  
  # default proj root
  # pragma: no cover
  ROOT_PATH_FOR_DYNACONF = get("ROOT_PATH_FOR_DYNACONF", None)
  
  # Default settings file
  SETTINGS_FILE_FOR_DYNACONF = get("SETTINGS_FILE_FOR_DYNACONF", [])
  
  # MISPELLS `FILES` when/if it happens
  mispelled_files = get("SETTINGS_FILES_FOR_DYNACONF", None)
  if not SETTINGS_FILE_FOR_DYNACONF and mispelled_files is not None:
      SETTINGS_FILE_FOR_DYNACONF = mispelled_files
  
  # # ENV SETTINGS
  # # In dynaconf 1.0.0 `NAMESPACE` got renamed to `ENV`
  
  
  # If provided environments will be loaded separatelly
  ENVIRONMENTS_FOR_DYNACONF = get("ENVIRONMENTS_FOR_DYNACONF", False)
  
  # If False dynaconf will allow access to first level settings only in upper
  LOWERCASE_READ_FOR_DYNACONF = get("LOWERCASE_READ_FOR_DYNACONF", True)
  
  # The environment variable to switch current env
  ENV_SWITCHER_FOR_DYNACONF = get(
      "ENV_SWITCHER_FOR_DYNACONF", "ENV_FOR_DYNACONF"
  )
  
  # The current env by default is DEVELOPMENT
  # to switch is needed to `export ENV_FOR_DYNACONF=PRODUCTION`
  # or put that value in .env file
  # this value is used only when reading files like .toml|yaml|ini|json
  ENV_FOR_DYNACONF = get(ENV_SWITCHER_FOR_DYNACONF, "DEVELOPMENT")
  
  # This variable exists to support `from_env` method
  FORCE_ENV_FOR_DYNACONF = get("FORCE_ENV_FOR_DYNACONF", None)
  
  # Default values is taken from DEFAULT pseudo env
  # this value is used only when reading files like .toml|yaml|ini|json
  DEFAULT_ENV_FOR_DYNACONF = get("DEFAULT_ENV_FOR_DYNACONF", "DEFAULT")
  
  # Global values are taken from DYNACONF env used for exported envvars
  # Values here overwrites all other envs
  # This namespace is used for files and also envvars
  ENVVAR_PREFIX_FOR_DYNACONF = get("ENVVAR_PREFIX_FOR_DYNACONF", "DYNACONF")
  
  # The default encoding to open settings files
  ENCODING_FOR_DYNACONF = get("ENCODING_FOR_DYNACONF", "utf-8")
  
  # Merge objects on load
  MERGE_ENABLED_FOR_DYNACONF = get("MERGE_ENABLED_FOR_DYNACONF", False)
  
  # BY default `__` is the separator for nested env vars
  # export `DYNACONF__DATABASE__server=server.com`
  # export `DYNACONF__DATABASE__PORT=6666`
  # Should result in settings.DATABASE == {'server': 'server.com', 'PORT': 6666}
  # To disable it one can set `NESTED_SEPARATOR_FOR_DYNACONF=false`
  NESTED_SEPARATOR_FOR_DYNACONF = get("NESTED_SEPARATOR_FOR_DYNACONF", "__")
  
  # The env var specifying settings module
  ENVVAR_FOR_DYNACONF = get("ENVVAR_FOR_DYNACONF", "SETTINGS_FILE_FOR_DYNACONF")
  
  # Default values for redis configs
  default_redis = {
      "host": get("REDIS_HOST_FOR_DYNACONF", "localhost"),
      "port": int(get("REDIS_PORT_FOR_DYNACONF", 6379)),
      "db": int(get("REDIS_DB_FOR_DYNACONF", 0)),
      "decode_responses": get("REDIS_DECODE_FOR_DYNACONF", True),
  }
  REDIS_FOR_DYNACONF = get("REDIS_FOR_DYNACONF", default_redis)
  REDIS_ENABLED_FOR_DYNACONF = get("REDIS_ENABLED_FOR_DYNACONF", False)
  
  # Hashicorp Vault Project
  vault_scheme = get("VAULT_SCHEME_FOR_DYNACONF", "http")
  vault_host = get("VAULT_HOST_FOR_DYNACONF", "localhost")
  vault_port = get("VAULT_PORT_FOR_DYNACONF", "8200")
  default_vault = {
      "url": get(
          "VAULT_URL_FOR_DYNACONF", f"{vault_scheme}://{vault_host}:{vault_port}"
      ),
      "token": get("VAULT_TOKEN_FOR_DYNACONF", None),
      "cert": get("VAULT_CERT_FOR_DYNACONF", None),
      "verify": get("VAULT_VERIFY_FOR_DYNACONF", None),
      "timeout": get("VAULT_TIMEOUT_FOR_DYNACONF", None),
      "proxies": get("VAULT_PROXIES_FOR_DYNACONF", None),
      "allow_redirects": get("VAULT_ALLOW_REDIRECTS_FOR_DYNACONF", None),
  }
  VAULT_FOR_DYNACONF = get("VAULT_FOR_DYNACONF", default_vault)
  VAULT_ENABLED_FOR_DYNACONF = get("VAULT_ENABLED_FOR_DYNACONF", False)
  VAULT_PATH_FOR_DYNACONF = get("VAULT_PATH_FOR_DYNACONF", "dynaconf")
  VAULT_MOUNT_POINT_FOR_DYNACONF = get(
      "VAULT_MOUNT_POINT_FOR_DYNACONF", "secret"
  )
  VAULT_ROLE_ID_FOR_DYNACONF = get("VAULT_ROLE_ID_FOR_DYNACONF", None)
  VAULT_SECRET_ID_FOR_DYNACONF = get("VAULT_SECRET_ID_FOR_DYNACONF", None)
  
  # Only core loaders defined on this list will be invoked
  core_loaders = ["YAML", "TOML", "INI", "JSON", "PY"]
  CORE_LOADERS_FOR_DYNACONF = get("CORE_LOADERS_FOR_DYNACONF", core_loaders)
  
  # External Loaders to read vars from different data stores
  default_loaders = [
      "dynaconf.loaders.env_loader",
      # 'dynaconf.loaders.redis_loader'
      # 'dynaconf.loaders.vault_loader'
  ]
  LOADERS_FOR_DYNACONF = get("LOADERS_FOR_DYNACONF", default_loaders)
  
  # Errors in loaders should be silenced?
  SILENT_ERRORS_FOR_DYNACONF = get("SILENT_ERRORS_FOR_DYNACONF", True)
  
  # always fresh variables
  FRESH_VARS_FOR_DYNACONF = get("FRESH_VARS_FOR_DYNACONF", [])
  
  DOTENV_PATH_FOR_DYNACONF = get("DOTENV_PATH_FOR_DYNACONF", None)
  DOTENV_VERBOSE_FOR_DYNACONF = get("DOTENV_VERBOSE_FOR_DYNACONF", False)
  DOTENV_OVERRIDE_FOR_DYNACONF = get("DOTENV_OVERRIDE_FOR_DYNACONF", False)
  
  # Currently this is only used by cli. INSTANCE_FOR_DYNACONF specifies python
  # dotted path to custom LazySettings instance. Last dotted path item should be
  # instance of LazySettings.
  INSTANCE_FOR_DYNACONF = get("INSTANCE_FOR_DYNACONF", None)
  
  # https://msg.pyyaml.org/load
  YAML_LOADER_FOR_DYNACONF = get("YAML_LOADER_FOR_DYNACONF", "safe_load")
  
  # Use commentjson? https://commentjson.readthedocs.io/en/latest/
  COMMENTJSON_ENABLED_FOR_DYNACONF = get(
      "COMMENTJSON_ENABLED_FOR_DYNACONF", False
  )
  
  # Extra file, or list of files where to look for secrets
  # useful for CI environment like jenkins
  # where you can export this variable pointing to a local
  # absolute path of the secrets file.
  SECRETS_FOR_DYNACONF = get("SECRETS_FOR_DYNACONF", None)
  
  # To include extra paths based on envvar
  INCLUDES_FOR_DYNACONF = get("INCLUDES_FOR_DYNACONF", [])
  
  # To pre-load extra paths based on envvar
  PRELOAD_FOR_DYNACONF = get("PRELOAD_FOR_DYNACONF", [])
  
  # Files to skip if found on search tree
  SKIP_FILES_FOR_DYNACONF = get("SKIP_FILES_FOR_DYNACONF", [])
  
  
  # Backwards compatibility with renamed variables
  for old, new in RENAMED_VARS.items():
      setattr(sys.modules[__name__], old, locals()[new])
  