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randint picks any whole number between two limits. Sometimes you want something narrower: only even numbers, only odd numbers, only multiples of five. The random module has a third tool for that, and you already know how it thinks, because it works like range.

A different way to import

So far every program has imported the whole module and then written random. in front of each tool. There is a second way to write the import, which brings in one tool by name:

from random import randrange

After that line the tool is called randrange on its own, with no random. in front of it. Both ways work. The first brings in the whole module; the second brings in just the one tool, so it is shorter to use but nothing else from the module is available.

Use one or the other for each tool. After from random import randrange, the name random has not been imported at all, so random.randrange(...) fails with a NameError. After import random, a bare randrange(...) fails in the same way.

Picking from a range

randrange takes the same three numbers as range: a start, a stop and a step. It works out every value that range would count through, and picks one of them at random.

from random import randrange

my_number = randrange(0, 10, 2)
print(my_number)

range(0, 10, 2) would count 0, 2, 4, 6, 8, so randrange(0, 10, 2) picks one of those five numbers. It never picks an odd number, because the step jumps over them, and it never picks 10, because the stop value is never reached.

This is the one real difference from randint. random.randint(0, 10) can pick 10; randrange(0, 10) cannot, because like range it stops before its stop value. randrange(0, 11) is what picks from 0 to 10.

All together

Code	Possible results
`random.randint(1, 6)`	1, 2, 3, 4, 5, 6
`random.choice([1, 2, 3, 4, 5, 6])`	1, 2, 3, 4, 5, 6
`randrange(1, 7)`	1, 2, 3, 4, 5, 6
`randrange(0, 10, 2)`	0, 2, 4, 6, 8
`randrange(5, 30, 5)`	5, 10, 15, 20, 25

The first three rows are three ways of rolling the same dice. Which one to use is mostly a matter of which reads most clearly: randint when you think in lowest and highest, choice when the options are already in a list, and randrange when you need a step.

from random import randrange

print(randrange(5, 30, 5))

Run it a few times and check every result against the last row of the table.

Help! My code doesn't work!

Make sure that you check for the following things:

The import matches the way the tool is used: from random import randrange with a bare randrange(...), or import random with random.randrange(...).
The numbers inside the brackets are separated by commas: start, stop, step.
The stop value is never picked, so add the step to it if it has to be possible.
The random number is wrapped in str() before it is joined onto text with a +.