[portland] Extracting strings from a tuple

[Adam Lowry]

On Nov 2, 2007, at 3:44 PM, Rich Shepard wrote:
> [(u'string 1', u'string 2', u'string 3', u'string 4', u'string 5',  
> u'string
> 6', u'string 7')]
>
>    What I want to do is walk through that tuple and extract each  
> string.
> However, I cannot successfully slice it, iterate through it, or use  
> an index
> to extract each string. According to "DIP," "Byte of Python," and  
> other
> books I should be able to get each string as a separate item.

Since what you have is a list containing a tuple containing 7  
strings, you need to first select which entry in the list you want,  
then which entries in the tuple you want:

 >>> l = [(u'string 1', u'string 2', u'string 3', u'string 4',  
u'string 5', u'string6', u'string 7')]
 >>> l[0]
(u'string 1', u'string 2', u'string 3', u'string 4', u'string 5',  
u'string6', u'string 7')
 >>> l[0][1:3]
(u'string 2', u'string 3')

When dealing with databases you end up with this idiom a lot:

search_results = getStuffFromDB()
for row in search_results:
	print "String 1:", row[0], "String 2:", row[1]

Does that answer your question?

Adam