update project

agent_based/cisco_wlc_power.py

@@ -13,7 +13,7 @@
 # 2021-07-15: rewritten for CMK 2.0
 #
 
-from typing import Dict
+from typing import Dict, Optional
 from cmk.base.plugins.agent_based.agent_based_api.v1.type_defs import (
     DiscoveryResult,
     CheckResult,
@@ -35,13 +35,13 @@ _ps_state = {
 }
 
 
-def parse_cisco_wlc_power(string_table: StringTable) -> Dict[str, bool]:
-    ps = {}
+def parse_cisco_wlc_power(string_table: StringTable) -> Optional[Dict[str, bool]]:
     try:
         ps1, ps1op, ps2, ps2op = string_table[0]
     except IndexError:
-        return ps
+        return
 
+    ps = {}
     if _ps_state.get(ps1):
         ps.update({'1': _ps_state.get(ps1op)})
     if _ps_state.get(ps2):