[Python-Dev] Best Python API for exposing posix_spawn
Pablo Galindo Salgado
pablogsal at gmail.com
Mon Jan 8 04:11:38 EST 2018
I'm currently working on exposing posix_spawn in the posix module (and by
extension in the os module). You can find the initial implementation in
As pointed out by Gregory P. Smith, some changes are needed in the way the
file_actions arguments is passed from Python. For context, posix_spawn has
the following declaration:
int posix_spawn(pid_t *pid, const char *path,
const posix_spawn_file_actions_t *file_actions,
const posix_spawnattr_t *attrp,
char *const argv, char *const envp);
Here, file_actions is an object that represents a list of file actions
(open, close or dup2) that is populated using helper functions on the C API.
The question is: what is the best way to deal with this argument?
Following Gregory's comment on the PR I understand that he is proposing to
have three objects in the os module representing each action and pass a
sequence of these objects to the Python API. What I am not sure about this
is that there is no previous example of such classes in the os module for
other similar APIs and therefore I am not sure if there is a better
Thanks you very much for your time!
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