Not true...
a carpet python is a general term... or general species. Morelia spilota
jungle carpets are a subsepecies, not morph. Morelia spilota cheynei
then there are others.. coastals (M.s. mcdowelli) Irian Jayas (M.s. harrisoni) diamond pythons (M.s. spilota) bedli or centralian carpet (M.s.bredli) etc... lots of subspecies of carpet pythons....
only a few morphs i can think of...jaguars being the most popular... granites..... high yellows.. which to my knowledge is more of a line bred trait in jungles rather than an actual morph. And now they have albinos coming out of the darwins (M.s.variagata)