You can do everything with ctypes if a little cumbersome.
" ":
from ctypes import windll, wintypes
_SHGetFolderPath = windll.shell32.SHGetFolderPathW
path_buf = wintypes.create_unicode_buffer(255)
csidl = 35
_SHGetFolderPath(0, csidl, 0, 0, path_buf)
print(path_buf.value)
:
C:\Documents and Settings\All Users\Application Data