Do python grow to there habtat?

Pythons - just like other animals - grow to their genetically programmed size.

A small Python such as a Royal Python may not reach five feet (1.8m) in length - whereas a Reticulated Python may top 33 feet (10m) or more !

Keeping a large snake confined to an enclosure that it soo small will cause the reptile distress, leading to health problems.