Are Python3.5 tuple comprehension really this limited?

Question

I\'ve been loving the tuple comprehensions added to Python3.5:

In [128]: *(x for x in range(5)),
Out[128]: (0, 1, 2, 3, 4)

However, when I

Answer 1

Pass a generator expression into the tuple() constructor, since there are no tuple-comprehensions:

{idx: tuple(x for x in range(5)) for idx in range(5)}

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Tuple-comprehensions don't exist, but even though list-comprehensions do ([... for ... in ...]) they are similar to*: list(... for ... in ...).

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*list comprehensions are actually faster than a generator expression passed into a constructor function as executing functions is expensive in Python