Question about tuple lengths
Jean-Paul Calderone
exarkun at divmod.com
Wed Dec 14 12:58:16 EST 2005
On Wed, 14 Dec 2005 09:54:31 -0800, "Carl J. Van Arsdall" <cvanarsdall at mvista.com> wrote:
>
> From my interpreter prompt:
>
> >>> tuple = ("blah")
> >>> len(tuple)
>4
> >>> tuple2 = ("blah",)
> >>> len (tuple2)
>1
>
>So why is a tuple containing the string "blah" without the comma of
>length four? Is there a good reason for this or is this a bug?
It's not a tuple :)
>>> t = ("blah")
>>> type(t)
<type 'str'>
>>> t2 = ("blah",)
>>> type(t2)
<type 'tuple'>
>>> t3 = "blah",
>>> type(t3)
<type 'tuple'>
>>>
It's the comma that makes it a tuple. The parenthesis are only required in cases where the expression might mean something else without them.
Jean-Paul
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