Split string into strings by length?

Question

Is there a way to take a string that is 4*x characters long, and cut it into 4 strings, each x characters long, without knowing the length of the s

Answer 1

Here is a one-liner that doesn't need to know the length of the string beforehand:

from functools import partial
from StringIO import StringIO

[l for l in iter(partial(StringIO(data).read, 4), '')]

If you have a file or socket, then you don't need the StringIO wrapper:

[l for l in iter(partial(file_like_object.read, 4), '')]