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| author | Georg Brandl <georg@python.org> | 2009-03-15 21:37:16 (GMT) |
|---|---|---|
| committer | Georg Brandl <georg@python.org> | 2009-03-15 21:37:16 (GMT) |
| commit | 3259ef3dff534dd0c106905ffa6e14d8fe7181e1 (patch) | |
| tree | 67d9e00eeda879262aad0b5216fec720c6f6fefa | |
| parent | 4c95e091d6bfb7b2686ebe2d715ae38f65d3eb8b (diff) | |
| download | cpython-3259ef3dff534dd0c106905ffa6e14d8fe7181e1.zip cpython-3259ef3dff534dd0c106905ffa6e14d8fe7181e1.tar.gz cpython-3259ef3dff534dd0c106905ffa6e14d8fe7181e1.tar.bz2 | |
#5493: clarify __nonzero__ docs.
| -rw-r--r-- | Doc/reference/datamodel.rst | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/Doc/reference/datamodel.rst b/Doc/reference/datamodel.rst index d083af5..0c1a10e 100644 --- a/Doc/reference/datamodel.rst +++ b/Doc/reference/datamodel.rst @@ -1424,11 +1424,12 @@ Basic customization .. index:: single: __len__() (mapping object method) - Called to implement truth value testing, and the built-in operation ``bool()``; + Called to implement truth value testing and the built-in operation ``bool()``; should return ``False`` or ``True``, or their integer equivalents ``0`` or - ``1``. When this method is not defined, :meth:`__len__` is called, if it is - defined (see below). If a class defines neither :meth:`__len__` nor - :meth:`__nonzero__`, all its instances are considered true. + ``1``. When this method is not defined, :meth:`__len__` is called, if it is + defined, and the object is considered true if its result is nonzero. + If a class defines neither :meth:`__len__` nor :meth:`__nonzero__`, all its + instances are considered true. .. method:: object.__unicode__(self) |