# Pastebin abhQdxHs
>>> l.open
<_FuncPtr object at 0x1031991c8>
>>> l.open(b"foo", os.O_CREAT | os.O_WRONLY, 0777)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NameError: name 'os' is not defined
>>> import os
>>> fd = l.open(b"foo", os.O_CREAT | os.O_WRONLY, 0777)
>>> os.write(f2, "foo")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NameError: name 'f2' is not defined
>>> os.write(fd, "foo")
3
>>> os.close(fd)
>>> 
zsh: suspended  python
fijal@Macmini: ~ ls -lh foo
----------  1 fijal  staff     3B Dec  1 12:12 foo
fijal@Macmini: ~