kodingwindow@kw:~$ python3
...
>>> kw="KodingWindow"
>>> kw
'KodingWindow'

>>> len(kw)
12

>>> kw[0]
'K'

>>> kw[11]
'w'
>>> kw[0:12:1]
'KodingWindow'

>> kw[0:12:2]
'KdnWno'

>>> kw[0:12:3]
'KiWd'

>>> kw[::-1]    reverse the given string
'wodniWgnidoK'
>>> kw[::1]
'KodingWindow'

>>> kw[::2]
'KdnWno'

>>> kw[::3]
'KiWd'
>>> kw[1::]
'odingWindow'

>>> kw[2::]
'dingWindow'

>>> kw[3::]
'ingWindow'