comment for readability

Author: Dimosts

cpmpy/expressions/globalfunctions.py

@@ -395,7 +395,7 @@ def decompose_comparison(self, cmp_op, cpm_rhs):
         constraints = []
 
         # introduce boolvar for each possible value
-        bvars = boolvar(shape=(ub+1-lb,))
+        bvars = boolvar(shape=(ub+1-lb,)) # shape is tuple to ensure it is a 1D array
 
         args = cpm_array(self.args)
         # bvar is true if the value is taken by any variable