start-pack

myenv/lib/python3.12/site-packages/django/db/migrations/exceptions.py

@@ -0,0 +1,60 @@
+from django.db import DatabaseError
+
+
+class AmbiguityError(Exception):
+    """More than one migration matches a name prefix."""
+
+    pass
+
+
+class BadMigrationError(Exception):
+    """There's a bad migration (unreadable/bad format/etc.)."""
+
+    pass
+
+
+class CircularDependencyError(Exception):
+    """There's an impossible-to-resolve circular dependency."""
+
+    pass
+
+
+class InconsistentMigrationHistory(Exception):
+    """An applied migration has some of its dependencies not applied."""
+
+    pass
+
+
+class InvalidBasesError(ValueError):
+    """A model's base classes can't be resolved."""
+
+    pass
+
+
+class IrreversibleError(RuntimeError):
+    """An irreversible migration is about to be reversed."""
+
+    pass
+
+
+class NodeNotFoundError(LookupError):
+    """An attempt on a node is made that is not available in the graph."""
+
+    def __init__(self, message, node, origin=None):
+        self.message = message
+        self.origin = origin
+        self.node = node
+
+    def __str__(self):
+        return self.message
+
+    def __repr__(self):
+        return "NodeNotFoundError(%r)" % (self.node,)
+
+
+class MigrationSchemaMissing(DatabaseError):
+    pass
+
+
+class InvalidMigrationPlan(ValueError):
+    pass