Re: Commutative object in emulating numbers

2009-09-13 Thread Steven D'Aprano
On Sun, 13 Sep 2009 21:52:26 -0700, iu2 wrote: > Hi, > > I reached the chapter "Emulating numeric types" in the python > documentation and I tried this: [...] > What do I need to do in order to make the two classes, int and A, > commutative? Try adding a __rmul__ method: class A: def __mu

Re: Commutative object in emulating numbers

2009-09-13 Thread iu2
On Sep 14, 8:16 am, Chris Rebert wrote: > On Sun, Sep 13, 2009 at 9:52 PM, iu2 wrote: > > Hi, > > > I reached the chapter "Emulating numeric types" in the python > > documentation and I tried this: > > class A: > >        def __mul__(self, a): > >                return 'A' * a > > > Now, thi

Re: Commutative object in emulating numbers

2009-09-13 Thread Chris Rebert
On Sun, Sep 13, 2009 at 9:52 PM, iu2 wrote: > Hi, > > I reached the chapter "Emulating numeric types" in the python > documentation and I tried this: > class A: >        def __mul__(self, a): >                return 'A' * a > > Now, this works as expected: a = A() a * 3 > 'AAA' > >

Re: Commutative object in emulating numbers

2009-09-13 Thread iu2
On Sep 14, 7:52 am, iu2 wrote: > Hi, > > I reached the chapter "Emulating numeric types" in the python > documentation and I tried this: > > >>> class A: > >         def __mul__(self, a): >                 return 'A' * a > > Now, this works as expected:>>> a = A() > >>> a * 3 > > 'AAA' > > But thi

Commutative object in emulating numbers

2009-09-13 Thread iu2
Hi, I reached the chapter "Emulating numeric types" in the python documentation and I tried this: >>> class A: def __mul__(self, a): return 'A' * a Now, this works as expected: >>> a = A() >>> a * 3 'AAA' But this doesn't (also as expected): >>> 3 * a Traceback (most re