[Tutor] Re: looping through and comparing lists of dictionaries

[pan@uchicago.edu]

> Message: 7
> From: "bkd" <bkd@graphnet.com>
> To: <tutor@python.org>
> Date: Wed, 23 Apr 2003 03:04:07 -0400
> Subject: [Tutor] looping through and comparing lists of dictionaries
 
[snip]

> What I have now is this:
> 
> for girl in range(len(redheads)):
>     if len(redheads)==0: break
>     else:
>         for line in range(len(olddata)):
>             if len(redheads)==0: break
>             elif olddata[line]['name']<>redheads[girl]: pass
>             elif olddata[line]['hair']=='Redhead': del redheads[girl]

Try this:

olddata = [x for x in olddata if x['name'] not in redheads]

for i in olddata: print i

This gives you:

>>> {'hair': 'Brunette', 'role': 'Castaway', 'name': 'Maryann'}
{'hair': 'Blond', 'role': 'Genie', 'name': 'Jeanne'}
{'hair': 'Brunette', 'role': 'Genie', 'name': 'Serena'}


HTH
pan