Import fix

Author: zaxtax

pymc/model/core.py

@@ -34,7 +34,7 @@
 
 from pytensor.compile import DeepCopyOp, Function, get_mode
 from pytensor.compile.sharedvalue import SharedVariable
-from pytensor.graph.basic import Constant, Variable, graph_inputs
+from pytensor.graph.basic import Constant, Variable, ancestors, graph_inputs
 from pytensor.tensor.random.op import RandomVariable
 from pytensor.tensor.random.type import RandomType
 from pytensor.tensor.variable import TensorConstant, TensorVariable