re.findall HELP!!! only returns None

[buran]

if someone could try running it on heir setup that would be great.

We did. @pyzyx3qwerty show the result already in post#2. Here again (just the string is shorter):

>>> import re
>>> y = 'We four guys, live at 2nd street of Malibeu'
>>> x = re.findall('[a-z]', y)
>>> print(x)
['e', 'f', 'o', 'u', 'r', 'g', 'u', 'y', 's', 'l', 'i', 'v', 'e', 'a', 't', 'n', 'd', 's', 't', 'r', 'e', 'e', 't', 'o', 'f', 'a', 'l', 'i', 'b', 'e', 'u']

As @deabhystad explained we suspect you have slightly different code and print None returned from a function. Especially because you mention function in your original post