Make User.run/TaskSet.run final and raise an exception if someone marks it with @task

locust/user/task.py

@@ -4,6 +4,7 @@
 import traceback
 from time import time
 from typing import Any, Callable, List, Union
+from typing_extensions import final
 
 import gevent
 from gevent import GreenletExit
@@ -36,6 +37,10 @@ def decorator_func(func):
             logging.warning(
                 "You have tagged your on_stop/start function with @task. This will make the method get called both as a task AND on stop/start."
             )  # this is usually not what the user intended
+        if func.__name__ == "run":
+            raise Exception(
+                "User.run() is a method used internally by Locust, and you must not override it or register it as a task"
+            )
         func.locust_task_weight = weight
         return func
 
@@ -270,6 +275,7 @@ def on_stop(self):
         """
         pass
 
+    @final
     def run(self):
         try:
             self.on_start()

locust/user/users.py

@@ -1,5 +1,6 @@
 from locust.user.wait_time import constant
 from typing import Any, Callable, Dict, List, TypeVar, Union
+from typing_extensions import final
 from gevent import GreenletExit, greenlet
 from gevent.pool import Group
 from locust.clients import HttpSession
@@ -124,6 +125,7 @@ def on_stop(self):
         """
         pass
 
+    @final
     def run(self):
         self._state = LOCUST_STATE_RUNNING
         self._taskset_instance = DefaultTaskSet(self)

setup.py

@@ -23,6 +23,7 @@
         "Flask-BasicAuth>=0.2.0",
         "Flask-Cors>=3.0.10",
         "roundrobin>=0.0.2",
+        "typing-extensions>=3.7.4.3",
     ],
     test_suite="locust.test",
     tests_require=[