[FRPythoneers] sorting a list of dictionaries

Cary Miller Cary.Miller at uchsc.edu
Mon Jan 20 17:54:28 MST 2003

Could you post an example of one of these data structures?

On Mon, 20 Jan 2003, Andrew Diederich wrote:

> Folks,
> I've made a python script to ldap query an exchange server, then kick out
> a webpage of phone and email addresses.  The result set from the ldap
> search is a list of two item tuples.  The first item in the tuple is the
> DN (distinguished name) and the second is a dictionary of attributes like
> uid, rfc822Mailbox, etc.
> What I had done to alphabetize the list at first was to just sort the
> initial result set, res.sort().  The problem with that is it basically
> sorts usernames then, and it's simply not intuitive to see a page of
> firstname, lastname sorted that way.  It's pretty close, but not quite.
> To make the first list just a list of dictionaries I just
> exchangelist = []
> for x in res: exchangelist.append(x[1])
> But I don't think exchangelist.sort() will sort by, say, cn (common name)
> since I didn't tell it to.  And I'm not sure how.  So what I'd like to do
> is either:
> 1) sort the list, then do a "for user in exhangelist: print ......."
> or
> 2) maybe pull out the values for the cn key into a list, then sort that,
> and use that sorted list somehow to re-sort the exchangelist I have.
> Does anyone have suggestions at good ways to do this?  If I've been
> unclear, just let me know, and I can post more of what I've written.
> Oh -- This is using python 1.5.2.  The linux box I'm running the script
> for had ldap already compiled in, or maybe it was the only python module
> I
> could find for ldap. I remember that ldap seemed under-represented in
> python modules.
> Thanks in advance,
> Andrew Diederich
> diederic at boulder.net
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//=\ Cary Miller                                    //=\  
\=// Center for Computational Pharmacology          \=// 
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