Added comment for enum cmp_op in generate_opcode_h.py :

/*
Store comparaison operators in an enum.
give each of them a new name : PY_OP --> PYCmp_OP.
PyCmp_LT <- PY_LT : Less Than (<)
PyCmp_LE <- PY_LE : Less or Equal than (<=)
PyCmp_EQ <- PY_EQ : EQual (==)
PyCmp_NE <- PY_NE : Not Equal (!=)
PyCmp_GT <- PY_GT : Greater Than (>)
PyCmp_GE <- PY_GE : Greater or Equal than (>=)
PyCmp_IN : a is IN sequence b (a in b)
PyCmp_NOT_IN : a is NOT IN sequence b (a not in b)
PyCmp_IS : a IS b (a is b)
PyCmp_IS_NOT : a IS NOT b (a is not b)
PyCmp_EXC_MATCH : EXCact MATCH of exception a and b
PyCmp_BAD : BAD operator : not suppoerted.

This enum is used by function cmpop in compile.c to map
elements from cmpop_ty enum defined in Python-ast.h

*/

enum cmp_op {PyCmp_LT=Py_LT, PyCmp_LE=Py_LE, PyCmp_EQ=Py_EQ, PyCmp_NE=Py_NE,
PyCmp_GT=Py_GT, PyCmp_GE=Py_GE, PyCmp_IN, PyCmp_NOT_IN,
PyCmp_IS, PyCmp_IS_NOT, PyCmp_EXC_MATCH, PyCmp_BAD};