Delete common entries between two dictionaries

[Amy G]

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?

Say I have a dictionary called domains_black
and another domains_white.. .

Thanks for the help.

[Aahz]

In article <7x************ @ruckus.brouhah a.com>,
Paul Rubin <http://ph****@NOSPAM.i nvalid> wrote:

aa**@pythoncra ft.com (Aahz) writes:

Paul Rubin:

for k in domains_white() :
if k in domains_black:
del domains_black[k]

Didja try that before posting?.... (I see at least two errors.)

Oops, editing error (I removed 'keys' which is no longer needed, but
forgot to remove the parentheses). No I didn't try it first.
What's the second error?

Try it and find out! ;-)
--
Aahz (aa**@pythoncra ft.com) <*> http://www.pythoncraft.com/

Weinberg's Second Law: If builders built buildings the way programmers wrote
programs, then the first woodpecker that came along would destroy civilization.

[Derrick 'dman' Hudson]

On Mon, 24 Nov 2003 14:20:30 -0800, David Eppstein wrote:

In article <97************ @dman13.dyndns. org>,
Derrick 'dman' Hudson <dm**@dman13.dy ndns.org> wrote:

This would be great for sets, if a set adequately models your data.
(with two sets, this would simply be (s1-(s1&s2)))

You mean s1 - s2, no need for that extra &.

Ah, of course -- if an item is in s2 but not in s1, the subtraction is
a no-op.

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Love is not affectionate feeling, but a steady wish for the loved
person's ultimate good as far as it can be obtained.
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