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From: "Leonard, Arah" <Arah.Leonard@bruker-axs.com>
To: "python-list@python.org" <python-list@python.org>
Subject: RE: Dict comp help
Thread-Topic: Dict comp help
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Date: Thu, 24 Jan 2013 21:39:37 +0000
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Xref: csiph.com comp.lang.python:37638

> Hi,
> Slightly different take on an old problem, I have a list of dicts, I need=
 to build one dict from this based on two values from each dict in the list=
. Each of the dicts in the list have similar key names, but values of cours=
e differ.
>=20
>=20
> [{'a': 'xx',=A0'b': 'yy',=A0'c': 'zz'}, =A0{'a': 'dd',=A0'b': 'ee',=A0'c'=
: 'ff'}]
>=20
>=20
> { 'xx': 'zz', 'dd': 'ff'}
>=20
>=20
> Anyone have insight on how to pull this off?
>=20
>=20
> Thanks!
> jlc
>=20

listy =3D [{'a':'xx', 'b':'yy', 'c':'zz'}, {'a':'dd', 'b':'ee','c':'ff'}]
kryten =3D {}
keys =3D []
for l in listy:
	for key in l.keys():
		if key not in keys: keys.append(key)
for key in keys:
	kryten[key] =3D ''
	for l in listy:
		kryten[key] +=3D l.has_key(key) and l[key] or ''
print kryten