Mercurial > cpython-lru_cache-weakref
diff Python/bltinmodule.c @ 20307:aa681345bfab legacy-trunk
Implement isinstance(x, (A, B, ...)). Note that we only allow tuples,
not other sequences (then we'd have to except strings, and we'd still
be susceptible to recursive attacks).
| author | Guido van Rossum <guido@python.org> |
|---|---|
| date | Sun, 07 Oct 2001 20:54:12 +0000 |
| parents | c082971823ce |
| children | bbdc0abfbb13 |
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--- a/Python/bltinmodule.c Sun Oct 07 11:44:49 2001 +0000 +++ b/Python/bltinmodule.c Sun Oct 07 20:54:12 2001 +0000 @@ -1641,10 +1641,12 @@ } static char isinstance_doc[] = -"isinstance(object, class-or-type) -> Boolean\n\ +"isinstance(object, class-or-type-or-tuple) -> Boolean\n\ \n\ Return whether an object is an instance of a class or of a subclass thereof.\n\ -With a type as second argument, return whether that is the object's type."; +With a type as second argument, return whether that is the object's type.\n\ +The form using a tuple, isinstance(x, (A, B, ...)), is a shortcut for\n\ +isinstance(x, A) or isinstance(x, B) or ... (etc.)."; static PyObject *