Quell async warning, and POST with body.

Author: ryanlovett

batchspawner/singleuser.py

@@ -1,3 +1,4 @@
+import asyncio
 import os
 import sys
 
@@ -7,17 +8,20 @@
 from jupyterhub.utils import random_port, url_path_join
 from jupyterhub.services.auth import HubAuth
 
+from tornado.escape import json_encode
 
 def main(argv=None):
     port = random_port()
     hub_auth = HubAuth()
     hub_auth.client_ca = os.environ.get("JUPYTERHUB_SSL_CLIENT_CA", "")
     hub_auth.certfile = os.environ.get("JUPYTERHUB_SSL_CERTFILE", "")
     hub_auth.keyfile = os.environ.get("JUPYTERHUB_SSL_KEYFILE", "")
-    hub_auth._api_request(
-        method="POST",
-        url=url_path_join(hub_auth.api_url, "batchspawner"),
-        json={"port": port},
+    asyncio.run(
+        hub_auth._api_request(
+            method="POST",
+            url=url_path_join(hub_auth.api_url, "batchspawner"),
+            body=json_encode({"port": port})
+        )
     )
 
     cmd_path = which(sys.argv[1])