#26287: SimpleLazyObject doesn't implement __radd__
-----------------------------+------------------------------------
     Reporter:  kezabelle    |                    Owner:  nobody
         Type:  New feature  |                   Status:  new
    Component:  Utilities    |                  Version:  master
     Severity:  Normal       |               Resolution:
     Keywords:               |             Triage Stage:  Accepted
    Has patch:  0            |      Needs documentation:  0
  Needs tests:  0            |  Patch needs improvement:  0
Easy pickings:  0            |                    UI/UX:  0
-----------------------------+------------------------------------

Comment (by debanshuk):

 Replying to [ticket:26287 kezabelle]:
 > As far as I can tell, the implementation can't just be
 > {{{
 > __radd__ = new_method_proxy(operator.radd)
 > }}}
 > because that doesn't exist, which is rubbish.
 > {{{
 > __radd__ = new_method_proxy(operator.attrgetter("__radd__"))
 > }}}
 > also won't work because types may not have that attr, and attrgetter
 doesn't supress the exception (correctly)

 Wouldn't the following code work?

 {{{
     __add__ = new_method_proxy(operator.add)
     __radd__ = new_method_proxy(lambda a, b: operator.add(b, a))
 }}}

 I have tested this and it seems to work as excepted.

--
Ticket URL: <https://code.djangoproject.com/ticket/26287#comment:5>
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