Merge pull request #858 from pengcheng888/issue/850

issue/850 - Tensor和device类访问不存在的属性,则抛出异常

python/infinicore/device.py

@@ -34,7 +34,10 @@ class device:
     def __getattr__(self, name):
         # Lazily construct and cache an attribute.
         # such as, self._underlying .
-        setattr(self, name, device._to_infinicore_device(self.type, self.index))
+        if name == "_underlying":
+            setattr(self, name, device._to_infinicore_device(self.type, self.index))
+        else:
+            raise AttributeError("{!r} object has no attribute {!r}".format(self, name))
         return getattr(self, name)
 
     def __repr__(self):

python/infinicore/tensor.py

@@ -42,6 +42,11 @@ class Tensor:
                     getattr(self._underlying, name)
                 ),
             )
+        else:
+            raise AttributeError(
+                "{!r} object has no attribute {!r}".format(__name__, name)
+            )
+
         return getattr(self, name)
 
     @property