homepage

Something really weird going on in python find() string function. When I call <string>.find() and python returns -1 it crashes when compared against 0 using the ">" operator.
The statement in which crash condition occurs is the following:
 if url.find(str) > 0:
 print "RSS Item:", url
	break; 
However, if I change the statement to be "<" instead it does not crash.
The error that the python compiler reports is:
AttributeError: 'int' object has no attribute 'find'
My version of python is:
tony@ubuntu:~/auto/sel/scripts$ python -V
Python 2.7.1+

Python 2.7.2 (default, Jun 16 2011, 01:46:46) 
[GCC 4.4.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> "hola".find("q") > 0
False
>>> "hola".find("q") < 0
True
I don't see the problem. Please, send a complete testcase.

Note, anyway, that your python is not a real release. where is it coming from?.

I suspect this is a problem where "url" is reassigned to an integer somewhere in code that isn't shown to us.
Please post the whole function and the whole traceback if you still think this is a valid bug.

Today I tried to use parse() instead of find() and I found out the following response:
tony@ubuntu:~/auto/sel/scripts$ python wtfibmdom
Traceback (most recent call last):
 File "wtfibmdom", line 22, in <module>
 if url.parse(str) > 0:
AttributeError: 'str' object has no attribute 'parse'
tony@ubuntu:~/auto/sel/scripts$ python wtfibmdom
Title: j3-dcsled-prd-validation passed 2011年7月01日 14:03:59 -0500
Description: Build passed
Traceback (most recent call last):
 File "wtfibmdom", line 22, in <module>
 if url.find(str) > 0:
AttributeError: 'int' object has no attribute 'find'
I think this behavior is inconsistent since the compiler is treating the url variable as int and string at the same time.

Hi Georg,
This is the python code listing:
from RSS import ns, CollectionChannel, TrackingChannel
#Create a tracking channel, which is a data structure that
#Indexes RSS data by item URL
tc = TrackingChannel()
str = 'j3-nspire-prd-validation'
index = 0
#Returns the RSSParser instance used, which can usually be ignored
#tc.parse("http://www.python.org/channews.rdf")
tc.parse("http://pdt-california.eps.ti.com:8080/dashboard/rss.xml") 
RSS10_TITLE = (ns.rss10, 'title')
RSS10_DESC = (ns.rss10, 'description')
#You can also use tc.keys()
items = tc.listItems()
for item in items:
 #Each item is a (url, order_index) tuple
 url = item[index]
 #print "RSS Item:", 
 #str.find(str, beg=0 end=len(string))
 if url.find(str) > 0:
 print "RSS Item:", url
	 break; 
 #Get all the data for the item as a Python dictionary
 index = index + 1
 item_data = tc.getItem(item)
 print "Title:", item_data.get(RSS10_TITLE, "(none)")
 print "Description:", item_data.get(RSS10_DESC, "(none)")

Can you post some example code or a test case?

Put the failing code inside a "try", and wrote in the "except": "print repr(url)". I am pretty sure your "url" can be, actually, a number.
Or print "url" just before the 'faulty' line. I guess you will be surprised.

I print 1 before the faulty line and like Jesús says I'm surprised I get a 1
Description: Build passed
1
Traceback (most recent call last):
 File "wtfibmdom", line 23, in <module>
 if url.find(str) > 0:
AttributeError: 'int' object has no attribute 'find'