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7 changes: 4 additions & 3 deletions Doc/c-api/module.rst
Original file line number Diff line number Diff line change
Expand Up @@ -523,9 +523,6 @@ state:

On success, return ``0``. On error, raise an exception and return ``-1``.

Return ``-1`` if *value* is ``NULL``. It must be called with an exception
raised in this case.

Example usage::

static int
Expand All @@ -540,6 +537,10 @@ state:
return res;
}

To be convenient, the function accepts ``NULL`` *value* with an exception
set. In this case, return ``-1`` and just leave the raised exception
unchanged.

The example can also be written without checking explicitly if *obj* is
``NULL``::

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