code: def set_default_locale(code: str) -> None:
      """Sets the default locale.
  
      The default locale is assumed to be the language used for all strings
      in the system. The translations loaded from disk are mappings from
      the default locale to the destination locale. Consequently, you don't
      need to create a translation file for the default locale.
      """
      global _default_locale
      global _supported_locales
      _default_locale = code
      _supported_locales = frozenset(
          list(_translations.keys()) + [_default_locale]
      )
  
imports: import codecs
  import csv
  import datetime
  import gettext
  import glob
  import os
  import re
  from tornado import escape
  from tornado.log import gen_log
  from tornado._locale_data import LOCALE_NAMES
  from typing import Iterable, Any, Union, Dict, Optional
label_desc: Use image node_id 2 for calling a global function with example usage: set_default_locale(code) without return types