Better guess for IterationError

ricardoV94 · ricardoV94 · commit 619fe66b1dee · 2025-10-29T23:23:09.000+01:00
diff --git a/pytensor/tensor/variable.py b/pytensor/tensor/variable.py
@@ -614,8 +614,7 @@ def __iter__(self):
             # This prevents accidental iteration via sum(self)
             raise TypeError(
                 "TensorType does not support iteration.\n"
-                "\tDid you pass a PyTensor variable to a function that expects a list?\n"
-                "\tMaybe you are using builtins.sum instead of pytensor.tensor.sum?"
+                "\tDid you try to unpack a Variable or used a function that expects a list?\n"
             )
 
     @property

Original file line number	Diff line number	Diff line change
`@@ -614,8 +614,7 @@ def __iter__(self):`
`614`	`614`	`# This prevents accidental iteration via sum(self)`
`615`	`615`	`raise TypeError(`
`616`	`616`	`"TensorType does not support iteration.\n"`
`617`		`- "\tDid you pass a PyTensor variable to a function that expects a list?\n"`
`618`		`- "\tMaybe you are using builtins.sum instead of pytensor.tensor.sum?"`
	`617`	`+ "\tDid you try to unpack a Variable or used a function that expects a list?\n"`
`619`	`618`	`)`
`620`	`619`
`621`	`620`	`@property`