Mmmm, really? A map? Like Google maps? Like a paper map? unfamiliar terminology.
Seriously, I learned how to use for loops in 1984. Been using them ever since. Maybe that's the problem. Too old to learn new tricks.
Oh, but the moral of the story is that because the computer understands those maps, then I can simply tell it what I have (point A, origin) and what I want (point B, destination) without telling it how to do it. Then the computer goes and writes that code for me! The same code you're now still writing manually. Because you don't want to learn a new "trick". :)
No, a map like the Python built-in function "map". Though, really, the for loop in your Python sample isn't a map done as a for loop, its a reduce done as a for loop. (Again, like the Python built-in "reduce".)