Fix some typing

Also added return value to _add_realization as that is expected by other
functions

src/_ert_job_runner/job.py

@@ -105,7 +105,8 @@ def ensure_file_handles_closed():
                     f"Most likely you are missing and should add "
                     f"'#!/usr/bin/env python' to the top of the file: "
                 )
-            stderr.write(msg)
+            if stderr is not None:
+                stderr.write(msg)
             ensure_file_handles_closed()
             yield Exited(self, e.errno).with_error(msg)
             return

src/ert/job_queue/driver.py

@@ -32,15 +32,15 @@ def has_option(self, option_key: str) -> bool:
         return option_key in self._options
 
     @abstractmethod
-    async def submit(self, realization: "QueueableRealization"):
+    async def submit(self, realization: "RealizationState"):
         pass
 
     @abstractmethod
     async def poll_statuses(self):
         pass
 
     @abstractmethod
-    async def kill(self, realization: "QueueableRealization"):
+    async def kill(self, realization: "RealizationState"):
         pass
 
     @classmethod

src/ert/job_queue/queue.py

@@ -10,6 +10,7 @@
 import logging
 import ssl
 from collections import deque
+from pathlib import Path
 from typing import TYPE_CHECKING, Any, Callable, Dict, List, Optional, Union
 
 from cloudevents.conversion import to_json
@@ -159,10 +160,11 @@ def kill_all_jobs(self) -> None:
     def queue_size(self) -> int:
         return len(self._realizations)
 
-    def _add_realization(self, realization: QueueableRealization) -> None:
+    def _add_realization(self, realization: QueueableRealization) -> int:
         self._realizations.append(
             RealizationState(self, realization, retries=self._queue_config.max_submit - 1)
         )
+        return len(self._realizations) - 1
 
     def max_running(self) -> int:
         max_running = 0
@@ -360,7 +362,7 @@ def add_realization_from_run_arg(
         num_cpu: int,
     ) -> None:
         qreal = QueueableRealization(
-            job_script=job_script,
+            job_script=Path(job_script),
             run_arg=run_arg,
             num_cpu=num_cpu,
             max_runtime=max_runtime,
@@ -374,7 +376,7 @@ def add_realization(
         callback_timeout: Optional[Callable[[int], None]] = None,
     ) -> None:
         qreal = QueueableRealization(
-            job_script=real.job_script,
+            job_script=Path(real.job_script),
             num_cpu=real.num_cpu,
             run_arg=real.run_arg,
             max_runtime=real.max_runtime,