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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def execute_loaders(self, env=None, silent=None, key=None, filename=None):
 """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 """

        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))