How do I do this same thing but with lists???
I apparently have two lists... not dictionaries.
This is what it prints if I add
print domains_black
[('YAHOO.COM', 118), ('buildingonline.com', 130), ('canada.com', 95),
('china.com', 104), ('earthlink.com', 118), ('earthlink.net', 122),
('email.com', 286), ('excite.com', 200), ('hongkong.com', 110), ('juno.com',
233), ('lycos.com', 95), ('mail.com', 399), ('minedu.fi', 134), ('msn.com',
764), ('shaw.ca', 259), ('stderr.windsongnews.com', 88), ('yahoo.ca', 435),
('yahoo.co.uk', 303), ('yahoo.com.hk', 156), ('yahoo.fr', 266)]
This is domains_white
[('aol.com', 17), ('awci.org', 6), ('cox.net', 12), ('hotmail.com', 6),
('yahoo.com', 11)]
I want to be left with domains_black =
[('YAHOO.COM', 118), ('buildingonline.com', 130), ('canada.com', 95),
('china.com', 104), ('earthlink.com', 118), ('earthlink.net', 122),
('email.com', 286), ('excite.com', 200), ('hongkong.com', 110), ('juno.com',
233), ('lycos.com', 95), ('mail.com', 399), ('minedu.fi', 134), ('msn.com',
764), ('shaw.ca', 259), ('stderr.windsongnews.com', 88), ('yahoo.ca', 435),
('yahoo.co.uk', 303), ('yahoo.com.hk', 156), ('yahoo.fr', 266)]
ie. minus the entries in domains_white.
Thanks again guys.
AMY
Derrick 'dman' Hudson said:
I have received such good help on this message board. I wonder if I
might not get a little more help from you on this.
I am at the point where I have two dictionaries, with information of
a domain and a frequency of that domain.
Now that I have the two, I want to delete each entry from one that
the two have in common, leaving only those that are unique to the
dictionary?
This would be great for sets, if a set adequately models your data.
(with two sets, this would simply be (s1-(s1&s2)))
Say I have a dictionary called domains_black and another
domains_white...
Did you want to define equality by key or by (key, value) pair?
for key in domains_white.keys() :
if key in domains_black: del domains_black[key]
for key in domains_white.keys() :
if key in domains_black and domains_white[key] == domains_black[key] :
del domains_black[key]
-D
--
He who scorns instruction will pay for it,
but he who respects a command is rewarded.
Proverbs 13:13
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