Extended slice notation doesn't recognise integer

[Thomas Covello]

Why does the following code give this error:

[0, 1, 2, 3, 4][::2]

TypeError: sequence index must be integer

 

[Paul Prescod]

Why does the following code give this error:

[0, 1, 2, 3, 4][::2]

TypeError: sequence index must be integer

In Python 2.2 lists did not support extended slice notation but in 2.3
they do.

Python 2.3.2 (#4, Feb 2 2004, 00:30:40)
[GCC 3.1 20020420 (prerelease)] on darwin
Type "help", "copyright", "credits" or "license" for more information.

>>> [0, 1, 2, 3, 4][::2]

[0, 2, 4]

http://www.python.org/peps/pep-0283.html
"This document describes the development and release schedule for Python
2.3."

"Extended slice notation for all built-in sequences. The patch by
Michael Hudson is now all checked in."

Paul Prescod

 

[Joe Francia]

Why does the following code give this error:

[0, 1, 2, 3, 4][::2]

TypeError: sequence index must be integer

This is what I get:

>>> [0, 1, 2, 3, 4][::2]

[0, 2, 4]

Are you using 2.3.x? I believe extended slices didn't show up until 2.3.

 

[Thomas Covello]

Thanks. I'll upgrade python.