The Jacl scripting language, does not have null values.
Whereas the Jython scripting language, does have a None value
which is similar to Null in the Java™ programming
language. Hence, Jacl scripts which check for an empty string might need
to have the preliminary converted Jython scripts manually modified to also
check for a possible None value. This depends on whether
or not the variable can have a None value.
JACL: if {x==""}
==>
JYTHON: if (x==None or x=="") #might need manually check for None values