I'm very new to Python, but.... I think it's really ':' and ':' side-by-side with no values, not a single "::".
In V2.3 and higher, slicing supports an optional third index which works as a step, e.g., X[2:9:2] fetches every other item in indexes 2-8. The useage you cite is really defaulting the start and end indexes, and decrementing the step index. Regards, "could ildg" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] I know that ":" can do slice works. But I saw "::" today and it puzzled me much, I can't find it in the python doc, so I raise this question here. The code is as below: ---------------------------------------------------------- Jython 2.2a1 on java1.5.0_03 (JIT: null) Type "copyright", "credits" or "license" for more information. >>> live='live';print live live >>> live=live[::-1];print live evil >>> -------------------------------------------------------- "[::-1]" can reverse a string magicly, how did it do it? -- http://mail.python.org/mailman/listinfo/python-list
