ValueError: invalid literal for int():

[Chris Rebert]

On Mon, Jul 26, 2010 at 3:25 AM, lee <san82moon at gmail.com> wrote:
> Hi,
>
> I have a value,
>
> partintid = int(Screw plugg  (91_10 -> untitled))
>
> but i get ValueError: invalid literal for int(): Screw plugg  (91_10 -
>> untitled)
> any help?

That is most certainly not your actual exact code, since it has a few
SyntaxErrors and thus Python would have bailed-out long before it ever
got the chance to raise ValueError. Please copy-and-paste the *actual
exact code* and exact error message.
Also, next time say what the desired output/behavior you're seeking is.

That being said, if your code is (as I suspect) in actuality:

partintid = int("Screw plugg  (91_10 -> untitled)")

then I would agree with int() and say that that string is nowhere
close to representing an integer (how precisely is "Screw" to be
interpreted as an integer, pray tell?); so what's so surprising about
getting an error when trying to convert it to one?

I suspect you're trying to extract 91 or 10 from the string. Use
string methods[1] to parse the desired numerical section out of the
string, and then pass the resulting numerical string to int(), which
will accept it without error and properly convert it.

If you want more detailed help, please provide a specification of
typical input strings and desired output integers.

[1]: http://docs.python.org/library/stdtypes.html#string-methods

Regards,
Chris
--
http://blog.rebertia.com