Robert Bradshaw, 03.12.2010 19:57: > On Fri, Dec 3, 2010 at 10:53 AM, Stefan Behnel wrote: >> Lisandro Dalcin, 03.12.2010 19:39: >>> On 3 December 2010 15:10, Stefan Behnel wrote: >>>> I just implemented C access to the fields of CPython's builtin types like >>>> this: >>>> >>>> cdef complex c = 1+2j >>>> c.real, c.imag = 10, 20 >>>> print (c.real, c.imag) >>>> >> Given that these two fields carry the >> same name as the Python visible attributes, this introduces behaviour that >> diverges from CPython's own behaviour. Making these fields mutable means >> that you will get an exception when you modify the field in CPython but a >> straight value update after you compiled your code. > > Of course we have exactly the same asymmetry for the read-only > attributes of typed cdef classes.
Sure. But I think it's a difference if you allow users to change the values of their own types, or if you allow them to accidentally change the value of an internal type of the CPython runtime. Stefan _______________________________________________ Cython-dev mailing list [email protected] http://codespeak.net/mailman/listinfo/cython-dev
