Hi Terry,
On 2010-09-25 19:24, Terry Reedy wrote:
> On 9/25/2010 4:22 AM, Yingjie Lan wrote:
> There is already a builtin reversed() function whose output can be
> multiplied.
Seemingly, it can't:
$ python
Python 2.6.5 (r265:79063, Apr 16 2010, 13:09:56)
[GCC 4.4.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> L = [1, 2, 3]
>>> 3 * reversed(L)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: unsupported operand type(s) for *: 'int' and 'listreverseiterator'
$ python3
Python 3.1.2 (r312:79147, Apr 15 2010, 12:35:07)
[GCC 4.4.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> L = [1, 2, 3]
>>> 3 * reversed(L)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: unsupported operand type(s) for *: 'int' and 'list_reverseiterator'
You can convert the result of `reversed` to a list though:
>>> 3 * list(reversed(L))
[3, 2, 1, 3, 2, 1, 3, 2, 1]
Stefan
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