w=list(x) v=tuple(w)

>>> x=(1,2,3,4,5)
>>> y=(2*i for i in x)
>>> y
<generator object <genexpr> at 0x01A2BE18>
>>> z=[2*i for i in x]
>>> z
[2, 4, 6, 8, 10]
>>> w=list(x)
>>> w
[1, 2, 3, 4, 5]
>>> v=tuple(w)
>>> v
(1, 2, 3, 4, 5)
>>>