diff options
Diffstat (limited to 'Doc/c-api/concrete.rst')
| -rw-r--r-- | Doc/c-api/concrete.rst | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/Doc/c-api/concrete.rst b/Doc/c-api/concrete.rst index 1855688..f492f16 100644 --- a/Doc/c-api/concrete.rst +++ b/Doc/c-api/concrete.rst @@ -2420,13 +2420,17 @@ change in future releases of Python. .. warning:: Take care when you are mixing streams and descriptors! For more - information, see `GNU C Library + information, see `the GNU C Library docs <http://www.gnu.org/software/libc/manual/html_node/Stream_002fDescriptor-Precautions.html#Stream_002fDescriptor-Precautions>`_. .. cfunction:: int PyObject_AsFileDescriptor(PyObject *p) - Return the file descriptor associated with *p* as an :ctype:`int`. + Return the file descriptor associated with *p* as an :ctype:`int`. If the + object is an integer or long integer, its value is returned. If not, the + object's :meth:`fileno` method is called if it exists; the method must return + an integer, which is returned as the file descriptor value. Sets an + exception and returns ``-1`` on failure. .. cfunction:: PyObject* PyFile_GetLine(PyObject *p, int n) |