As these pythons age their pattern becomes a lot less defined and almost all older specimens that I have seen had no visible pattern at all.
The pygmy python has a very low average number of ventral scales (232) and have a known maximum of 250.
They also have a low mid-body scales count which ranges from 31 to 35. There has been some debate as to whether or not the pygmy python in the wild will naturally cross with the Stimsons python Antaresia stimsoni which in many areas are sympatric in range.
I believe that this scenario could be possible but would be very rare and I have only ever seen one single specimen that in my opinion represents a natural cross of the two species. It would have been very interesting to quantify though, whether or not this individual was fertile or not.
Pygmy pythons have proved hardy captives and are quickly becoming popular within the reptile pet industry. At the present time however, they unfortunately remain hard to obtain due to the very low numbers held in captivity.