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| author | Antoine Pitrou <solipsis@pitrou.net> | 2011-12-03 21:30:19 (GMT) |
|---|---|---|
| committer | Antoine Pitrou <solipsis@pitrou.net> | 2011-12-03 21:30:19 (GMT) |
| commit | 48383bfc67438b0e280be732a13dbc77a8dceb8e (patch) | |
| tree | c7f0ae52f5f5d953380291e31ae38bdb4ab50752 /Doc | |
| parent | f35204055e5c514a1eb3b1948366743269d1ec90 (diff) | |
| download | cpython-48383bfc67438b0e280be732a13dbc77a8dceb8e.zip cpython-48383bfc67438b0e280be732a13dbc77a8dceb8e.tar.gz cpython-48383bfc67438b0e280be732a13dbc77a8dceb8e.tar.bz2 | |
Advocate PyTuple_Pack instead of manual building of tuples
Diffstat (limited to 'Doc')
| -rw-r--r-- | Doc/faq/extending.rst | 7 |
1 files changed, 1 insertions, 6 deletions
diff --git a/Doc/faq/extending.rst b/Doc/faq/extending.rst index d880564..676890e 100644 --- a/Doc/faq/extending.rst +++ b/Doc/faq/extending.rst @@ -99,12 +99,7 @@ many other useful protocols. How do I use Py_BuildValue() to create a tuple of arbitrary length? ------------------------------------------------------------------- -You can't. Use ``t = PyTuple_New(n)`` instead, and fill it with objects using -``PyTuple_SetItem(t, i, o)`` -- note that this "eats" a reference count of -``o``, so you have to :c:func:`Py_INCREF` it. Lists have similar functions -``PyList_New(n)`` and ``PyList_SetItem(l, i, o)``. Note that you *must* set all -the tuple items to some value before you pass the tuple to Python code -- -``PyTuple_New(n)`` initializes them to NULL, which isn't a valid Python value. +You can't. Use :c:func:`PyTuple_Pack` instead. How do I call an object's method from C? |