Check undefined variable

Author: B-R-P

python.ltz

@@ -54,7 +54,9 @@ listrange:
     call: [jrange,range]
 
 #-----------------------
-
+chk_defined:
+  regex: "!(<var>)"
+  tokens: [var]
 settings:
   loop: True
   variables:

source.yaml

@@ -17,4 +17,5 @@ condition: |-
 notdefined: <var> if '<var>' in locals() else <value>
 range: <comma>range(<start>,<end>+1)
 jrange: range(<start>,<end>+1,<jump>)
-listrange: list(<inside>)
+listrange: list(<inside>)
+chk_defined: "'<var>' not in locals()"