Lint fix part 2

Author: zaxtax

pymc_experimental/tests/model/test_marginal_model.py

@@ -4,6 +4,7 @@
 import numpy as np
 import pandas as pd
 import pymc as pm
+import pytensor.tensor as pt
 import pytest
 from arviz import InferenceData, dict_to_dataset
 from pymc import ImputationWarning, inputvars