My python sprays everywhere too, but I hook it up in my bathtub and can pull the shower curtain over to contain the spray. I can see how it would make a mess if you had it attached to a sink faucet.
, I'm convinced that the Python hardware is made by Melnor, a manufacturer of garden hoses and lawn sprinklers. Python just puts their name on it and jacks up the price 400%.
Open this link and scroll down to the very bottom.
That's the same connector on my python - down to the color of the plastic!
Halfway down this page is the shutoff valve.
$7 at Petco; $2.49 at my garden center!
I bought the deluxe quick-connect kit and an extra hose connect kit at my garden center for $6.99.
Now, I can quickly attach and remove my python from the faucet without the constant worry of stripping the plastic threads. I can also quickly change out the gravel vac attachments at the other end. I have two - one for the big tank and one for the Q/H tank.