[Tutor] How to test function using random.randint()?

[boB Stepp]

On Sat, Mar 19, 2016 at 8:03 AM, Steven D'Aprano <steve at pearwood.info> wrote:
> On Sat, Mar 19, 2016 at 04:05:58PM +1100, Ben Finney wrote:
>
>>     import random
>>
>>     def roll_die(num_sides, rng=None):
>>         """ Return a result from a random die of `num_sides` sides.
>>
>>             :param num_sides: The number of sides on the die.
>>             :param rng: An instance of `random.Random`, the random
>>                 number generator to use.
>>                 Default: the `random.random` instance.
>>             :return: The integer result from the die roll.
>>
>>             The die is defined to have equal-probability faces, numbered
>>             from 1 to `num_sides`.
>>
>>             """
>>         if rng is None:
>>             rng = random.random
>
> Typo: you want rng = random.randint.

I am thinking that Ben meant: rng = random.Random().  This would then
make sense in light of the test cases he sets up later.

>
>>         result = rng.randint(1, num_sides)
>
> And here you just want result = rng(1, num_sides). Otherwise you're
> trying to call random.randint.randint.

And then this statement would be correct as Ben wrote it.  Ben, please
chime in if I have got it wrong.

boB