It seems like I see at least one person a year make a similar post in this forum. I think it is uncommon, but not necessarily rare.
There is usually poor egg viability in a partho clutch of ball python eggs. I have read that hatchlings produced are rarely in perfect health and/or live a 'normal' lifespan.
If you want some practice incubating eggs you could try hatching them....or you could just leave the eggs with the mother for maternal incubation (=easier-->more risky method).
Since I have a great deal of experience working with ball python hatchlings born with physical defects: I would probably try and incubate the eggs and then attempt to grow them up. If I did not have this experience: I would probably choose to freeze the eggs and toss them-rather then deal with any potential complications which may require costly veterinary care outside my range of expertise...
I've seen a lot of posts online with people attempting to incubate partho clutches and then no follow-ups...this makes me think a lot of them do not turn out well... In the event you do succeed in hatching a partho clutch: You will have to deal with rehoming and/or keeping them...depending on the morph (or lack thereof): that can be a hassle in itself...
My![]()