▁support ▁includes , ▁inheritance ▁and ▁embedding ▁arbitrary ▁Python ▁code . ▁ ▁Because ▁of ▁P yl ons ' ▁lo os ely ▁couple d ▁layers , ▁other ▁tem pl ating ▁languages ▁can ▁be ▁used ▁as ▁well . ▁G ens hi , ▁an ▁XML - based ▁tem pl ating ▁language , ▁can ▁be ▁used ▁in ▁lieu ▁of ▁either ▁M ako ▁or ▁My g ht y . ▁ ▁Database ▁abstra ction ▁and ▁object - rel ational ▁mapping ▁P yl ons ▁has ▁no ▁default ▁database ▁library . ▁Both ▁SQL Object ▁and ▁SQL Al ch emy ▁are ▁known ▁to ▁be ▁used . ▁ ▁Mer ger ▁with ▁repo ze . bf g ▁and ▁birth ▁of ▁Py ram id ▁Web ▁Framework ▁P yl ons ▁has ▁developed ▁into ▁the ▁P yl ons ▁Project , ▁and ▁the ▁old ▁code ▁from ▁P yl ons ▁ 1 . 0 ▁is ▁now ▁in ▁maintenance - only ▁mode . ▁However , ▁purs u ant ▁to ▁the ▁project ' s ▁mer ger ▁with ▁repo ze . bf g ▁since ▁November ▁ 2 0 1 0 , ▁newer ▁versions ▁of ▁P yl ons ▁are ▁actually ▁different ▁from ▁the ▁original ▁P yl ons ▁ 1 . 0 . ▁P yl ons ▁developers ▁initially ▁planned ▁to ▁rewrite ▁certain ▁port ions ▁of ▁the ▁code , ▁but ▁they ▁observed ▁that ▁the ▁new ▁code ▁was ▁approxim ating ▁repo ze . bf g , ▁which ▁led ▁to ▁the ▁mer ger ▁of ▁P yl ons ▁and ▁repo ze . bf g . ▁This ▁led ▁to ▁repo ze . bf g ▁( a ▁part ▁of ▁the ▁Re