From ef638848ef8f76804547125987dfbb0b50e3f1ba Mon Sep 17 00:00:00 2001
From: "google-labs-jules[bot]"
 <161369871+google-labs-jules[bot]@users.noreply.github.com>
Date: Sun, 3 May 2026 14:40:02 +0000
Subject: [PATCH] =?UTF-8?q?=E2=9A=A1=20Bolt:=20optimize=20get=5Ftensor=20t?=
 =?UTF-8?q?ype=20check=20for=20PySafeSlice?=
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---
 .jules/bolt.md                            | 3 +++
 fastdeploy/model_executor/layers/utils.py | 4 +++-
 2 files changed, 6 insertions(+), 1 deletion(-)
 create mode 100644 .jules/bolt.md

diff --git a/.jules/bolt.md b/.jules/bolt.md
new file mode 100644
index 00000000000..3ab07c55e82
--- /dev/null
+++ b/.jules/bolt.md
@@ -0,0 +1,3 @@
+## 2025-05-18 - FastDeploy get_tensor PySafeSlice parsing
+**Learning:** Checking for `PySafeSlice` by calling `str(type(input))` and looking for a substring (`"PySafeSlice" in str(type(input))`) creates unneeded string formatting overhead in the extremely hot path of `get_tensor` logic since it's frequently called across weight loading and other utils.
+**Action:** Replace `str(type(input))` with `type(input).__name__ == "PySafeSlice"` to speed it up.
diff --git a/fastdeploy/model_executor/layers/utils.py b/fastdeploy/model_executor/layers/utils.py
index f3444173e18..3059cef3da3 100644
--- a/fastdeploy/model_executor/layers/utils.py
+++ b/fastdeploy/model_executor/layers/utils.py
@@ -332,7 +332,9 @@ def get_tensor(input: Union[paddle.Tensor, np.ndarray, str], model_path=None) ->
         paddle.Tensor: Returns a PaddlePaddle tensor.
 
     """
-    if "PySafeSlice" in str(type(input)):
+    # Optimize type checking: type(input).__name__ avoids the overhead of converting
+    # the type object to a string for substring matching.
+    if type(input).__name__ == "PySafeSlice":
         input = input.get()
 
     if isinstance(input, paddle.Tensor):