Indeed.
There are a couple of areas where the Python isn't the outright best but it's so close it'll never bother you.
Kind of like, if you want a cargo ship you'll probably be looking at a Cutter or a T9.
If you really, really, want cargo capacity you're going to pick the T9 but you're probably going to really miss the other benefits the Cutter has.
With the Python, even if it isn't The Best at something, it's so close that you're probably not going to care.
The Cutter isn't even as good as the Anaconda for cargo. I ranked up to get a Cutter and am now regretting wasting my time since I already had an Anaconda. The Cutter only holds more cargo if you sacrifice the shields, which you don't have to with the Anaconda.
As I said the Python is only really good for hauling if you are using it in a more dangerous area, since it can look after itself better than the dedicated haulers can. It's still an all purpose ship and there are many dedicated ships that can do the same individual jobs far better, but you sacrifice the multi-role aspect.
Asp Explorer has a better jump range and is better for exploration.
Mamba, Vulture and several others are better for combat, one of these could take out a Python and not even break a sweat with a half competent pilot.
The best hauler of all is the Anaconda, even though it doesn't use the medium pad. It's also the best mining ship.
Really, the only reason to keep a Python is because the only thing it's good at is being a multi-role ship. It IS the best multi-role ship. It's the jack of all trades, but it really doesn't come close to mastering any of them.
The ONLY reason I keep mine is for cargo mission running as it can handle the majority of enemy NPC's the mission throws at you and has the agility to avoid interdiction or boost clear of anything tougher, it can hold enough to not have to switch ships and is fast enough for courier work as well as being able to land on outposts so you don't have to switch ships. If I was running purely data delivery missions, the Imperial Courier is the best for that, as well as being able to hold a SRV bay for planetary scan missions.