newbie: concatenate literals (using jython)
Tomasz Lisowski
list at notmyisp.pl
Fri Dec 23 02:40:40 EST 2005
Fredrik Lundh wrote:
> davidmichaelkarr at gmail.com wrote:
>
>
>>I'm using Jython (actually WebLogic WLST), and trying to do something
>>really simple. I want to create a string from two function calls and a
>>literal, like:
>>
>> serverport = server.getListenAddress() + ':' + server.getListenPort()
>>
>>This complains:
>>
>>TypeError: __add__ nor __radd__ defined for these operands
>>
>>I've looked at various references, and this seems like the way I'm
>>supposed to do this, but I'm obviously missing something. Note that
>>"getListenPort()" returns an int. Is that a problem?
>
>
> yes. python's string concatenation operator doesn't convert things nilly-
> willy (should "1"+1 be 2 or "11" ?). to convert an object to a string, use
> str(obj). see this tutorial section for more info:
>
> http://docs.python.org/tut/node9.html#SECTION009100000000000000000
>
> </F>
>
>
>
You are right, Fredrik, but David is using Jython, so perhaps he tried
to mimic the Java language behaviour, where adding ints and strings is
perfectly valid :)
I admit, though, that I do not know much about Jython apart from the
fact, that it is somehow related to Java ...
Best regards,
Tomasz Lisowski
More information about the Python-list
mailing list