Message 257597 - Python tracker

`str(object)` is not a protocol for getting a string out of an object. It's a protocol for getting a string for print(). __str__ is defined for every object and therefore is useless for getting a string out of "string-like" object (as __float__ for floats and __bytes__ for bytes). Perhaps we need a new special method __string__ that relates to __str__ as __index__ to __int__.