>>> texto = "probando"
>>> for letra in texto:
. . . print letra
. . .
p
r
o
b
a
n
d
o
>>> frutas = ["pomelo", "manzana", "frutilla"]
>>> for fruta in frutas:
. . . print fruta
. . .
pomelo
manzana
frutilla
>>> for n in range(0, 5):
. . . print n
. . .
0
1
2
3
4