I'm going to say male as it looks like he (or she) has some colours coming in.
Just for an example, this is my male panther, he's about 3 to 3.5 years old. He is the friendliest chameleon I have ever seen which is one of the reasons I purchased him. His price tag was $449.99. The store screwed up and gave me $60 for my always angry veiled so 449.99+13% tax should be $508.48, - $60 should be $448.48 and the store only charged me $300 Of course I said nothing.
Next to my BPs, this is the best reptile I've ever owned and would not hesitate to buy another one once he passes. He has maybe another 3 years to go.
Another picture of my male, about a year ago:
My female which I never did get to breed (she wouldn't take it), it happens. I just sold her to a knowledgeable chameleon keeper and breeder, she was 1.5 years old in this picture, I was sad to see her go:
Ball Pythons in my collection:
Male Cinnamon
Male Spider
Male Mojave
Female Bumblebee
Female Pastel
Female Lesser
Female Blue Eyed Leucistic (my prized possession)