diff options
| -rw-r--r-- | Doc/reference/datamodel.rst | 7 | ||||
| -rw-r--r-- | Misc/NEWS.d/next/Documentation/2020-09-03-13-37-19.bpo-41706._zXWOR.rst | 2 |
2 files changed, 6 insertions, 3 deletions
diff --git a/Doc/reference/datamodel.rst b/Doc/reference/datamodel.rst index bb0b7e0..2c76e56 100644 --- a/Doc/reference/datamodel.rst +++ b/Doc/reference/datamodel.rst @@ -2439,7 +2439,7 @@ left undefined. (``+``, ``-``, ``*``, ``@``, ``/``, ``//``, ``%``, :func:`divmod`, :func:`pow`, ``**``, ``<<``, ``>>``, ``&``, ``^``, ``|``). For instance, to evaluate the expression ``x + y``, where *x* is an instance of a class that - has an :meth:`__add__` method, ``x.__add__(y)`` is called. The + has an :meth:`__add__` method, ``type(x).__add__(x, y)`` is called. The :meth:`__divmod__` method should be the equivalent to using :meth:`__floordiv__` and :meth:`__mod__`; it should not be related to :meth:`__truediv__`. Note that :meth:`__pow__` should be defined to accept @@ -2475,8 +2475,9 @@ left undefined. (swapped) operands. These functions are only called if the left operand does not support the corresponding operation [#]_ and the operands are of different types. [#]_ For instance, to evaluate the expression ``x - y``, where *y* is - an instance of a class that has an :meth:`__rsub__` method, ``y.__rsub__(x)`` - is called if ``x.__sub__(y)`` returns *NotImplemented*. + an instance of a class that has an :meth:`__rsub__` method, + ``type(y).__rsub__(y, x)`` is called if ``type(x).__sub__(x, y)`` returns + *NotImplemented*. .. index:: builtin: pow diff --git a/Misc/NEWS.d/next/Documentation/2020-09-03-13-37-19.bpo-41706._zXWOR.rst b/Misc/NEWS.d/next/Documentation/2020-09-03-13-37-19.bpo-41706._zXWOR.rst new file mode 100644 index 0000000..6406494 --- /dev/null +++ b/Misc/NEWS.d/next/Documentation/2020-09-03-13-37-19.bpo-41706._zXWOR.rst @@ -0,0 +1,2 @@ +Fix docs about how methods like ``__add__`` are invoked when evaluating +operator expressions. |