En Mon, 21 Jan 2008 00:37:36 -0200, J. Peng <[EMAIL PROTECTED]> escribi�:
> Python's variable is dynamic type,is it? No. Python has objects, and names that refer to those objects. Objects have a type, which can't change once the object is created. But a name may refer to different objects of different types at different times. See http://effbot.org/zone/python-objects.htm > But why this can't work? > >>>> 3 + 'a' > Traceback (most recent call last): > File "<stdin>", line 1, in ? > TypeError: unsupported operand type(s) for +: 'int' and 'str' > > > So I see the number 3 can't be converted to string type automacially. Python never "converts" anything, except numeric types in expressions (2+3.0, sqrt(5L)) and sometimes string/unicode. -- Gabriel Genellina -- http://mail.python.org/mailman/listinfo/python-list
