done

lib/python3.11/site-packages/dash/_obsolete.py

@@ -0,0 +1,23 @@
+# pylint: disable=too-few-public-methods
+from .exceptions import ObsoleteAttributeException
+
+
+class ObsoleteAttribute:
+    def __init__(self, message: str, exc=ObsoleteAttributeException):
+        self.message = message
+        self.exc = exc
+
+
+class ObsoleteChecker:
+    _obsolete_attributes = {
+        "run_server": ObsoleteAttribute("app.run_server has been replaced by app.run"),
+        "long_callback": ObsoleteAttribute(
+            "app.long_callback has been  removed, use app.callback(..., background=True) instead"
+        ),
+    }
+
+    def __getattr__(self, name: str):
+        if name in self._obsolete_attributes:
+            err = self._obsolete_attributes[name]
+            raise err.exc(err.message)
+        return getattr(self.__dict__, name)