fixed subtle problem with commit fe22781, see notes for issue 56
fixed subtle problem with commit fe22781, see notes for issue 56

ctb/pygr,cjlee112/pygr,GenDataPro/pygr,RitwikGupta/pygr,GenDataPro/pygr,theoryno3/pygr,theoryno3/pygr,cjlee112/pygr,ctb/pygr,cjlee112/pygr,RitwikGupta/pygr,theoryno3/pygr,RitwikGupta/pygr,cjlee112/pygr,ctb/pygr,GenDataPro/pygr,ctb/pygr,ctb/pygr