If your Jacl script contains embedded expressions in a String literal, then you need to manually change the converted Jython script to implement equivalent embedded expressions.
JACL: puts "Number of cells: [llength $cellList]" ==> JYTHON: print "Number of cells: [llength "+cellList+"]Solution: Manually insert the appropriate Jython expression:
JYTHON: print "Number of cells: "+`len(cellList)` # manually modified