Split string into strings by length?

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 string?

For example:

>>>x = "qwertyui"
>>>split(x, one, two, three, four)
>>>two
'er'

>>> x = "qwertyui"
>>> chunks, chunk_size = len(x), len(x)/4
>>> [ x[i:i+chunk_size] for i in range(0, chunks, chunk_size) ]
['qw', 'er', 'ty', 'ui']

I tried Alexanders answer but got this error in Python3:

TypeError: 'float' object cannot be interpreted as an integer

This is because the division operator in Python3 is returning a float. This works for me:

>>> x = "qwertyui"
>>> chunks, chunk_size = len(x), len(x)//4
>>> [ x[i:i+chunk_size] for i in range(0, chunks, chunk_size) ]
['qw', 'er', 'ty', 'ui']

Notice the // at the end of line 2, to ensure truncation to an integer.

• :param s: str; source string
• :param w: int; width to split on

Using the textwrap module:

PyDocs-textwrap

import textwrap
def wrap(s, w):
    return textwrap.fill(s, w)

:return str:

Inspired by Alexander's Answer

PyDocs-data structures

def wrap(s, w):
    return [s[i:i + w] for i in range(0, len(s), w)]

• :return list:

Inspired by Eric's answer

PyDocs-regex

import re
def wrap(s, w):    
    sre = re.compile(rf'(.{{{w}}})')
    return [x for x in re.split(sre, s) if x]

• :return list:

Complete Code Examples/Alternative Methods