Hello Terry, Thanks, I understand now.
Tuesday, May 10, 2011, 2:16:24 AM, you wrote: > On 5/9/2011 4:25 PM, Claudiu Popa wrote: >> I already told in the first post that I've implemented __str__ function, >> but it doesn't seems to be automatically called. > No, Python does not auto-coerce to strings (only between numbers). > You have to be explicit by calling str. Karim's statement "You just have > to implement __str__() python special method for your "custom_objects". > " means that str will then work. >> For instance, the following example won't work: >> >>>>> class a: >> def __init__(self, i): >> self.i = i >> def __str__(self): >> return "magic_function_{}".format(self.i) >>>>> t = a(0) >>>>> str(t) >> 'magic_function_0' >>>>> "".join([t]) > print('\n'.join(str(ob) for ob in [a(0), a(1), a(None)])) > magic_function_0 > magic_function_1 > magic_function_None -- Best regards, Claudiu -- http://mail.python.org/mailman/listinfo/python-list