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Mention Py_RETURN_NONE when introducing the idiom of how to have a function

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return Py_None.
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Brett Cannon 2004-06-27 04:28:00 +00:00
parent ebd95222bf
commit 634893d1a3
1 changed files with 2 additions and 1 deletions
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Doc/ext/extending.tex
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@ -290,7 +290,8 @@ are objects on the heap in Python!)
If you have a C function that returns no useful argument (a function If you have a C function that returns no useful argument (a function
returning \ctype{void}), the corresponding Python function must return returning \ctype{void}), the corresponding Python function must return
\code{None}. You need this idiom to do so: \code{None}. You need this idiom to do so (which is implemented by the
\csimplemacro{Py_RETURN_NONE} macro):
\begin{verbatim} \begin{verbatim}
Py_INCREF(Py_None); Py_INCREF(Py_None);