Merge branch 'main' of github.com:Tractables/pyjuice into main

Author: liuanji

src/pyjuice/model/tensorcircuit.py

@@ -735,7 +735,7 @@ def _init_buffer(self, name: str, shape: Tuple, set_value: Optional[float] = Non
             if not flag and tensor.size(i) != d:
                 flag = True
 
-        if not flag and check_device and tensor.device != self.device:
+        if not flag and check_device and self.device.index is not None and tensor.device != self.device:
             flag = True
 
         if flag: