formats.py 文件源码

def iter_format_modules(lang, format_module_path=None):
    """
    Does the heavy lifting of finding format modules.
    """
    if not check_for_language(lang):
        return

    if format_module_path is None:
        format_module_path = settings.FORMAT_MODULE_PATH

    format_locations = []
    if format_module_path:
        if isinstance(format_module_path, six.string_types):
            format_module_path = [format_module_path]
        for path in format_module_path:
            format_locations.append(path + '.%s')
    format_locations.append('django.conf.locale.%s')
    locale = to_locale(lang)
    locales = [locale]
    if '_' in locale:
        locales.append(locale.split('_')[0])
    for location in format_locations:
        for loc in locales:
            try:
                yield import_module('%s.formats' % (location % loc))
            except ImportError:
                pass