konstantin wrote:
On Jul 22, 9:18 am, alex23 <[EMAIL PROTECTED]> wrote:
On Jul 22, 3:10 pm, konstantin <[EMAIL PROTECTED]> wrote:
some_string[i:j:k]
What does it mean?
i = start position, j = end position, k = step size
s = "ABABABABABABAB"
s[0:6:2]
'AAA'
s = "ABCABCABCABCABC"
s[0:6:3]
'AA'
Hope this helps.
- alex23
Thanks!
It seems that negative step leads in reverse direction.
But logic isn't completely clear for me.
s = '123456789'
s[::-2]
'97531'
but
s[:-1:-2]
The slice s[:-1]
means start at zero and go to n-1(where n-len(s))
(it does not mean start at zero and go to -1)
So since the indexing is counting upward, the step size had better be
positive. Thus:
>>> s = '123456789'
>>> s[:-1:2]
'1357'
>>>
Gary Herron
''
though I expected something like '8642'
What did i missed?
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