On line 54 of utilities/iterables.py [0], we check to see if a variable is a lambda by checking the __str__ value, which is a bit bad. I see two other options:
1. Check to see if rv is callable. The builtin callable() was removed in Py3k, but 2to3 will replace it with the appropriate check against collections.Callable. 2. Check to see if rv is an instance of types.LambdaType. While still better than what we have right now, it limits us only to lambdas, not all callable types. I would guess that in practice this is not an issue, but I don't really know. [0]: http://github.com/sympy/sympy/blob/master/sympy/utilities/iterables.py#L54 -- James Pearson -- There is no clear division between Gods and Men -- one blends softly casual into the other. -- Iblis Ginjo, Options for Total Liberation -- You received this message because you are subscribed to the Google Groups "sympy" group. To post to this group, send email to sy...@googlegroups.com. To unsubscribe from this group, send email to sympy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sympy?hl=en.
