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venv/Lib/site-packages/django/contrib/messages/api.py

@@ -0,0 +1,96 @@
+from django.contrib.messages import constants
+from django.contrib.messages.storage import default_storage
+
+__all__ = (
+    'add_message', 'get_messages',
+    'get_level', 'set_level',
+    'debug', 'info', 'success', 'warning', 'error',
+    'MessageFailure',
+)
+
+
+class MessageFailure(Exception):
+    pass
+
+
+def add_message(request, level, message, extra_tags='', fail_silently=False):
+    """
+    Attempt to add a message to the request using the 'messages' app.
+    """
+    try:
+        messages = request._messages
+    except AttributeError:
+        if not hasattr(request, 'META'):
+            raise TypeError(
+                "add_message() argument must be an HttpRequest object, not "
+                "'%s'." % request.__class__.__name__
+            )
+        if not fail_silently:
+            raise MessageFailure(
+                'You cannot add messages without installing '
+                'django.contrib.messages.middleware.MessageMiddleware'
+            )
+    else:
+        return messages.add(level, message, extra_tags)
+
+
+def get_messages(request):
+    """
+    Return the message storage on the request if it exists, otherwise return
+    an empty list.
+    """
+    return getattr(request, '_messages', [])
+
+
+def get_level(request):
+    """
+    Return the minimum level of messages to be recorded.
+
+    The default level is the ``MESSAGE_LEVEL`` setting. If this is not found,
+    use the ``INFO`` level.
+    """
+    storage = getattr(request, '_messages', default_storage(request))
+    return storage.level
+
+
+def set_level(request, level):
+    """
+    Set the minimum level of messages to be recorded, and return ``True`` if
+    the level was recorded successfully.
+
+    If set to ``None``, use the default level (see the get_level() function).
+    """
+    if not hasattr(request, '_messages'):
+        return False
+    request._messages.level = level
+    return True
+
+
+def debug(request, message, extra_tags='', fail_silently=False):
+    """Add a message with the ``DEBUG`` level."""
+    add_message(request, constants.DEBUG, message, extra_tags=extra_tags,
+                fail_silently=fail_silently)
+
+
+def info(request, message, extra_tags='', fail_silently=False):
+    """Add a message with the ``INFO`` level."""
+    add_message(request, constants.INFO, message, extra_tags=extra_tags,
+                fail_silently=fail_silently)
+
+
+def success(request, message, extra_tags='', fail_silently=False):
+    """Add a message with the ``SUCCESS`` level."""
+    add_message(request, constants.SUCCESS, message, extra_tags=extra_tags,
+                fail_silently=fail_silently)
+
+
+def warning(request, message, extra_tags='', fail_silently=False):
+    """Add a message with the ``WARNING`` level."""
+    add_message(request, constants.WARNING, message, extra_tags=extra_tags,
+                fail_silently=fail_silently)
+
+
+def error(request, message, extra_tags='', fail_silently=False):
+    """Add a message with the ``ERROR`` level."""
+    add_message(request, constants.ERROR, message, extra_tags=extra_tags,
+                fail_silently=fail_silently)