Fix error message when args contains an ndarray.

numpy.ndarray overrides __eq__ to do elemwise equality checks, thus yielding an ndarray, which cannot be cast as a bool. This doesn't play nicely with list.index; numpy throws a ValueError.

Fix error message when args contains an ndarray.
9769b065 · Josh Bleecher Snyder · e8749f10 · 76ea3f45 · 9769b065
--- a/theano/compile/function_module.py
+++ b/theano/compile/function_module.py
@@ -510,7 +510,7 @@ class Function(object):

        # Set positional arguments
        i = 0
-        for arg in args:
+        for arg_index, arg in enumerate(args):
            #TODO: provide a Param option for skipping the filter if we
            #      really want speed.
            s = self.input_storage[i]
@@ -520,7 +520,7 @@ class Function(object):
                try:
                    s.storage[0] = s.type.filter(arg, strict=s.strict)
                except Exception, e:
-                    e.args = tuple(list(e.args)+["Bad input argument at index %d"%(list(args).index(arg))])
+                    e.args = tuple(list(e.args)+["Bad input argument at index %d" % arg_index])
                    raise
            s.provided += 1
            i+=1