pythontupleslist-comprehensiondictionary-comprehensionset-comprehension

Why is there no tuple comprehension in Python?

As we all know, there's list comprehension, like

[i for i in [1, 2, 3, 4]]

and there is dictionary comprehension, like

{i:j for i, j in {1: 'a', 2: 'b'}.items()}

but

(i for i in (1, 2, 3))

will end up in a generator, not a tuple comprehension. Why is that?

My guess is that a tuple is immutable, but this does not seem to be the answer.

Solution

  • You can use a generator expression:

    tuple(i for i in (1, 2, 3))

    but parentheses were already taken for … generator expressions.