homepage

>>> from os import *
>>> fdopen
Traceback (most recent call last):
 File "<stdin>", line 1, in <module>
NameError: name 'fdopen' is not defined

While this is technically probably a bug, I'm -0 on fixing it in bugfix releases, as it has the risk of breaking working code.

I think this came in when we moved os.fdopen and os.popen from native C code to Python code in http://hg.python.org/cpython/rev/1f7891d84d93. This works fine in 2.7. The same issue exist with os.popen, but that is deprecated.

> While this is technically probably a bug, I'm -0 on fixing it in bugfix
> releases, as it has the risk of breaking working code.
I don't feel strongly about in which release this should be fixed, but
can you give me an example of how it could break working code?

> can you give me an example of how it could break working code?
This is a bit contrived, but:
# my fdopen
def fdopen(fd):
 pass
fdopen(1)
# some stuff
from os import *
# more stuff
fdopen(1)
Here is a patch for 3.3 tip. After reviewing the 'os' module documentation I found a few more cases.

Perhaps a little less contrived
from libc_wrapper import fdopen
from os import *
where libc_wrapper might be a module built on top of ctypes.

I found two more: P_NOWAITO and _exit. Attached an updated patch.

New changeset 352147bbefdb by Petri Lehtinen in branch 'default':
#14862: Add missing names to os.__all__
http://hg.python.org/cpython/rev/352147bbefdb