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import threading
from pathlib import Path
from django.apps import apps
def watch_for_translation_changes(sender, **kwargs):
"""Register file watchers for .mo files in potential locale paths."""
from django.conf import settings
if settings.USE_I18N:
directories = [Path('locale')]
directories.extend(Path(config.path) / 'locale' for config in apps.get_app_configs())
directories.extend(Path(p) for p in settings.LOCALE_PATHS)
for path in directories:
sender.watch_dir(path, '**/*.mo')
def translation_file_changed(sender, file_path, **kwargs):
"""Clear the internal translations cache if a .mo file is modified."""
if file_path.suffix == '.mo':
import gettext
from django.utils.translation import trans_real
gettext._translations = {}
trans_real._translations = {}
trans_real._default = None
trans_real._active = threading.local()
return True
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