Deprecate generator data

Author: michaelosthege

pymc/pytensorf.py

@@ -89,6 +89,12 @@ def convert_observed_data(data) -> np.ndarray | Variable:
 
 
 def convert_generator_data(data) -> TensorVariable:
+    warnings.warn(
+        "Generator data is deprecated and we intend to remove it."
+        " If you disagree and need this, please get in touch via https://github.com/pymc-devs/pymc/issues.",
+        DeprecationWarning,
+        stacklevel=2,
+    )
     return generator(data)
 
 

tests/test_pytensorf.py

@@ -262,7 +262,8 @@ def test_convert_generator_data(input_dtype):
 
     # Output is NOT wrapped with `pm.floatX`/`intX`,
     # but produced from calling a special Op.
-    result = convert_generator_data(square_generator)
+    with pytest.warns(DeprecationWarning, match="get in touch"):
+        result = convert_generator_data(square_generator)
     apply = result.owner
     op = apply.op
     # Make sure the returned object is an PyTensor TensorVariable