Can I do this with list comprehension?

[Ben Finney]

barberomarcelo at gmail.com writes:

> Let's say I have two lists:
> 
> a = [0, 1, 0, 1, 1, 0]
> b = [2, 4, 6, 8, 10, 12]
> 
> I want a list comprehension that has the elements in b where a[element]
> == 1.
> 
> That's to say, in the example above, the result must be: [4, 8, 10]
> 
> Any hints?

What have you already tried, and how is it insufficient?

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Ben Finney