Python range() with negative strides

Question

Is there a way of using the range() function with stride -1?

E.g. using range(10, -10) instead of the square-bracketed values below?

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Answer 1

You can specify the stride (including a negative stride) as the third argument, so

range(10,-11,-1)

gives

[10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, -1, -2, -3, -4, -5, -6, -7, -8, -9, -10] 

In general, it doesn't cost anything to try. You can simply type this into the interpreter and see what it does.

This is all documented here as:

range(start, stop[, step])

but mostly I'd like to encourage you to play around and see what happens. As you can see, your intuition was spot on.