Update app.py

app.py

@@ -32,10 +32,24 @@ def clip_and_norm(img: np.ndarray, vmin: float, vmax: float) -> np.ndarray:
     x = (x - vmin) / max(vmax - vmin, 1e-6)
     return x.astype(np.float32)
 
-def load_nii(file) -> np.ndarray:
+def load_nii(file) -> np.ndarray | None:
+    """
+    兼容 Gradio 4/5：File 可能是字符串路径、{'path': ...} 字典，或旧式带 .name 的对象。
+    """
     if file is None:
         return None
-    img = nib.load(file.name)
+
+    if isinstance(file, (str, os.PathLike)):
+        path = str(file)
+    elif isinstance(file, dict) and "path" in file:
+        path = file["path"]
+    else:
+        path = getattr(file, "name", None)
+
+    if not path or not os.path.exists(path):
+        return None
+
+    img = nib.load(path)
     return img.get_fdata().astype(np.float32)
 
 def clean_report_text(raw: str) -> str: