[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

python/taichi/lang/util.py

@@ -166,16 +166,16 @@ def to_pytorch_type(dt):
         return torch.uint8
     if dt == f16:
         return torch.float16
-    
+
     if dt in (u16, u32, u64):
-      if hasattr(torch, "uint16"):
-        if dt == u16:
-          return torch.uint16
-        if dt == u32:
-          return torch.uint32
-        if dt == u64:
-          return torch.uint64
-      raise RuntimeError(f"PyTorch doesn't support {dt.to_string()} data type before version 2.3.0.")
+        if hasattr(torch, "uint16"):
+            if dt == u16:
+                return torch.uint16
+            if dt == u32:
+                return torch.uint32
+            if dt == u64:
+                return torch.uint64
+        raise RuntimeError(f"PyTorch doesn't support {dt.to_string()} data type before version 2.3.0.")
 
     raise RuntimeError(f"PyTorch doesn't support {dt.to_string()} data type.")
     assert False
@@ -276,18 +276,17 @@ def to_taichi_type(dt):
             return u8
         if dt == torch.float16:
             return f16
-        
+
         if hasattr(torch, "uint16"):
-          if dt == torch.uint16:
-            return u16
-          if dt == torch.uint32:
-            return u32
-          if dt == torch.uint64:
-            return u64
+            if dt == torch.uint16:
+                return u16
+            if dt == torch.uint32:
+                return u32
+            if dt == torch.uint64:
+                return u64
 
         raise RuntimeError(f"PyTorch doesn't support {dt.to_string()} data type before version 2.3.0.")
 
-  
     if has_paddle():
         import paddle  # pylint: disable=C0415