>>> s = "abcdef"
>>> s[1:3]
Out[1]: 'bc'
>>> type(s)
Out[1]: str
>>> type(s[1:3])
Out[1]: str
>>> l = [ 0, 1, 2, 3, 4, 5 ]
>>> l[1:3]
Out[1]: [1, 2]
>>> type(l)
Out[1]: list
>>> type(l[1:3])
Out[1]: list
>>> range(10)
Out[1]: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
>>> s = "a b c d e f"
>>> s.split()
Out[1]: ['a', 'b', 'c', 'd', 'e', 'f']
>>> s.split('c')
Out[1]: ['a b ', ' d e f']