Issue #783: python3 compatible - refactored any() into a loop to make python 3 happy.

theano/compile/pfunc.py

@@ -179,7 +179,8 @@ def rebuild_collect_shared(outputs,
     # it is also not clear when/how to use the value of that shared
     # variable (is it a default? ignored?, if the shared variable changes,
     # does that function default also change?).
-    if any([isinstance(v, SharedVariable) for v in input_variables]):
+    for v in input_variables:
+        if isinstance(v, SharedVariable):
             raise TypeError(('Cannot use a shared variable (%s) as explicit '
                              'input. Consider substituting a non-shared'
                              ' variable via the `givens` parameter') % v)