If Ball Pythons are XY, parthenogenesis would mean all babies would be female. If Ball Pythons are ZW, then either gender is possible.
Too bad it's a normal. Depending on the males that have bred with her it may be impossible to conclusively state it's parthenogenesis
Just looked up ZW, found a post on this site statubg reptiles are ZW, but no, SOME reptiles are ZW, including Komodo Dragons