python - How to apply itertools.product to elements of a list of lists? -

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I have a list of arrays and I would like to get the cartesian product of elements in the array.

I would use an example to make it more solid ...

itertools.product wants to do the trick, but I'm stuck in a little detail. 

  arrays = [((-1, + 1), (-2, + 2), (-3, + 3)];

If I do 

  cp = list (itertools.product (arrays));

get me 

  cp = Cp0 = [((-1, 1)), ((-2, 2)), ((-3, 3),)]

But what do I have to do? / P> 

  cp1 = [(-1, -2, -3), (-1, -2, +3), (-1, + 2, -3), (-1, + 2, + 3), ..., (+ 1, + 2, -3), (+ 1, 2, 3)].

I have tried a few different things: 

  cp = list (itertools.product (itertools.islice (arrays, lanes (arrays))) ); Cp = list (itertools.product (arrays, lanes (arrays)));

All of them gave me cp0 instead of cp1 .

Any thoughts?

Thanks in advance. 

  & gt; & Gt; & Gt; List (Iterols.product (* array)) [(-1, -2, -3), (-1, -2, 3), (-1, 2, -3), (-1, 2, 3) , (1, -2, -3), (1, -2, 3), (1, 2, -3), (1, 2, 3)]

Feed all the arguments in the product as separate arguments, which will then give you the Cartesian product.

The reason your version is not working is that it is a trivial matter to ask for a Cartesian product of a list of only one argument, and give a list containing only one element product (List provided in the list).


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