Message340298
A tuple can be created with or without parentheses:
a = (1, 2, 3)
a = 1, 2, 3
While both are intuitive in this example, omitting the parentheses can lead to hard to find errors when there is only one element:
a = (1,)
a = 1,
The first is clear but the second can easily occur as a typo when the programmer actually just wanted to assign an integer (comma is next to enter on many keyboards).
I think ideally, omitting parentheses in the single element case would throw a SyntaxError.
On the other hand, I assume that it could be difficult to separate the behavior or tuple creating with an without parentheses, since the parentheses are probably not actually part of the tuple literal. |
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Date |
User |
Action |
Args |
2019-04-15 18:27:31 | danijar | set | recipients:
+ danijar, brett.cannon, benjamin.peterson, yselivanov, xtreak |
2019-04-15 18:27:31 | danijar | set | messageid: <1555352851.43.0.0863954988621.issue36637@roundup.psfhosted.org> |
2019-04-15 18:27:31 | danijar | link | issue36637 messages |
2019-04-15 18:27:31 | danijar | create | |
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