Fixed the python version warning to show the expected version.

theano/gpuarray/__init__.py

@@ -50,8 +50,13 @@ def init_dev(dev, name=None):
     if v[1] < 0:
         raise RuntimeError("Wrong minor API version for gpuarray:", v[1],
                            "Please update libgpuarray/pygpu.")
-    if len(v) < 3 or v[2] < 0:
-        print("Wrong python API version for gpuarray:", v[2],
+    if len(v) < 3:
+        vpy = -1
+    else:
+        vpy = v[2]
+    vpye = 0
+    if vpy < vpye:
+        print("Wrong python API version for gpuarray:", vpy, "expected:", vpye,
               "Some python ops may not work correctly and/or crash. "
               "Consider updating pygpu.", file=sys.stderr)
     global pygpu_activated