mypy: zulip_botserver: Fix errors in zulip_botserver/server.py.

tools/run-mypy

@@ -20,10 +20,7 @@ sys.path.append(os.path.dirname(TOOLS_DIR))
 
 exclude = """
 zulip/integrations/perforce/git_p4.py
-
 zulip_bots/zulip_bots/bots
-
-zulip_botserver/zulip_botserver/server.py
 zulip_botserver/setup.py
 """.split()
 

zulip_botserver/zulip_botserver/server.py

@@ -84,7 +84,7 @@ def handle_bot(bot):
     return json.dumps("")
 
 def parse_args():
-    # type: () -> Tuple[Any]
+    # type: () -> argparse.Namespace
     usage = '''
             zulip-bot-server --config-file <path to flaskbotrc> --hostname <address> --port <port>
             Example: zulip-bot-server --config-file ~/flaskbotrc