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| -rw-r--r-- | Doc/api/abstract.tex | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/Doc/api/abstract.tex b/Doc/api/abstract.tex index c5939b2..1cf69dc 100644 --- a/Doc/api/abstract.tex +++ b/Doc/api/abstract.tex @@ -175,12 +175,16 @@ for which they do not apply, they will raise a Python exception. or a subclass of \var{cls}, or \code{0} if not. On error, returns \code{-1} and sets an exception. If \var{cls} is a type object rather than a class object, \cfunction{PyObject_IsInstance()} - returns \code{1} if \var{inst} is of type \var{cls}. If \var{inst} - is not a class instance and \var{cls} is neither a type object or - class object, \var{inst} must have a \member{__class__} attribute + returns \code{1} if \var{inst} is of type \var{cls}. If \var{cls} + is a tuple, the check will be done against every entry in \var{cls}. + The result will be \code{1} when at least one of the checks returns + \code{1}, otherwise it will be \code{0}. If \var{inst} is not a class + instance and \var{cls} is neither a type object, nor a class object, + nor a tuple, \var{inst} must have a \member{__class__} attribute --- the class relationship of the value of that attribute with \var{cls} will be used to determine the result of this function. \versionadded{2.1} + \versionchanged[Support for a tuple as the second argument added]{2.2} \end{cfuncdesc} Subclass determination is done in a fairly straightforward way, but |