[examtt] InstancesDZN correction

real/examtt/fab/dzn2py/README.md

 # dzn2py tool (dzn2py.sh and dzn2py_control.py)
 
-
 # Desc
 
   The dzn2py.sh script makes .py.xz data file from .dzn.xz data file. Then
   it controls the .py produced file, by calling the dzn2py_control.py code.
 
-  The resulting .py data file is ready to be imported by exam_tt.py
+  The resulting .py data file is ready to be imported by
+  (exam_tt_main.py + exam_tt_pb.py) code.
 
 - Produced data files :
 
-${DATA_DZN_PATH}/*.dzn ---- dzn2py.sh ----> ${DATA_PY_PATH}/*.py
-
-../../data/                                 ../../instances/python/
-  
-
+  data/InstancesDZN/*.dzn.xz ----dzn2py.sh----> instances/python/*.py.xz
 
 # Example 
 
@@ -24,7 +20,8 @@ ${DATA_DZN_PATH}/*.dzn ---- dzn2py.sh ----> ${DATA_PY_PATH}/*.py
 
 - result :
 
-  ./D1-3-18.py.xz file produced from ../../data/D1-3-18.dzn.xz file
+  ./D1-3-18.py.xz file produced from ../../data/InstancesDZN/D1-3-18.dzn.xz file
 
-  The D1-3-18.py data file is ready to be imported by exam_tt.py
+  The D1-3-18.py data file is ready to be imported by 
+  (exam_tt_main.py + exam_tt_pb.py) code.
 

real/examtt/fab/dzn2py/dzn2py.sh

@@ -7,7 +7,7 @@ fpy=`echo $fdzn.py|sed 's/.dzn//'`
 
 printf "Generates $fdzn.xz -> $fpy.xz ...\n" 
 
-cp ../../data/$1 . 
+cp ../../data/InstancesDZN/$1 . 
 unxz ./$1 ; # => $fdzn
 
 sed 's/\[|/[\[/' $fdzn > ./tmp1