django/contrib/messages/context_processors.py


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from django.contrib.messages.api import get_messages
from django.contrib.messages.constants import DEFAULT_LEVELS


def messages(request):
    """
    Return a lazy 'messages' context variable as well as
    'DEFAULT_MESSAGE_LEVELS'.
    """
    return {
        'messages': get_messages(request),
        'DEFAULT_MESSAGE_LEVELS': DEFAULT_LEVELS,
    }