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mention how to override boolean evaluation

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Benjamin Peterson 2008-09-23 13:32:46 +00:00
parent 3e876fd146
commit fe7c26d942
1 changed files with 2 additions and 1 deletions
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Doc/reference/expressions.rst
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@ -1143,7 +1143,8 @@ In the context of Boolean operations, and also when expressions are used by
control flow statements, the following values are interpreted as false:
``False``, ``None``, numeric zero of all types, and empty strings and containers
(including strings, tuples, lists, dictionaries, sets and frozensets). All
other values are interpreted as true.
other values are interpreted as true. (See the :meth:`~object.__nonzero__`
special method for a way to change this.)
.. index:: operator: not