Python String Slicing

pyslicing.txt

>>> "THIS is what I want"[:4]
'THIS'

>>> "THIS is what I don't want"[4:]
" is what I don't want"

>>> "I do not want THIS"[:-4]
'I do not want '

>>> "I only want THIS"[-4:]
'THIS'

>>> "I want THIS only"[7:11]
'THIS'

>>> "I want THIS only"[-9:-5]
'THIS'

>>> "I want every other character from 10th on"[10::2]
'r te hrce rm1t n'

>>> "Reverse SIHT"[11:7:-1]
'THIS'

>>> "Reverse SIHT"[-1:-5:-1]
'THIS'