Aside from the obvious that just about everything will go away someday, is there a reason you believe this?
From my vantage point (albiet limited) python looks like it has staying power. It is easy to use, effecient enough (and with unladen swallow in development it may get a lot more effecient soon), and currently seems to be gaining ground instead of losing. Eventually I am sure that it and any other language you can possibly name will get supplanted, but I am not aware of any particular reason to expect that any time remotely soon.
Heh, first to be clear, I agree that very few things are truly permanent. In fact, I said that in my original question. What I said is that I do not think Python will be going away any time soon, and your examples play nicely into that theme.
The Roman Empire lasted for many centuries, Jovial, Forth, and PL/1 all had very long runs. In fact, they are all still used in some limited capacities today.
I might have dated myself above by mentioning Tcl and Pascal, but I've been programming for a few decades. Without ruining the cosmic punchline: all things go away surprisingly fast.
Aside from the obvious that just about everything will go away someday, is there a reason you believe this?
From my vantage point (albiet limited) python looks like it has staying power. It is easy to use, effecient enough (and with unladen swallow in development it may get a lot more effecient soon), and currently seems to be gaining ground instead of losing. Eventually I am sure that it and any other language you can possibly name will get supplanted, but I am not aware of any particular reason to expect that any time remotely soon.