code: def execute_loaders(self, env=None, silent=None, key=None, filename=None):
          
          if key is None:
              default_loader(self, self._defaults)
          env = (env or self.current_env).upper()
          silent = silent or self.SILENT_ERRORS_FOR_DYNACONF
          settings_loader(
              self, env=env, silent=silent, key=key, filename=filename
          )
          self.load_extra_yaml(env, silent, key)  # DEPRECATED
          enable_external_loaders(self)
          for loader in self.loaders:
              self.logger.debug("Dynaconf executing: %s", loader.__name__)
              loader.load(self, env, silent=silent, key=key)
          self.load_includes(env, silent=silent, key=key)
          self.logger.debug("Loaded Files: %s", deduplicate(self._loaded_files))
docs: Execute all internal and registered loaders
  
          :param env: The environment to load
          :param silent: If loading erros is silenced
          :param key: if provided load a single key
          :param filename: optional custom filename to load