Python version of STL multimap?

Gerhard Häring gerhard.haering at gmx.de
Sat Jul 6 17:13:24 EDT 2002


* Roy Smith <roy at panix.com> [2002-07-06 16:42 -0400]:
> I often want to create a dictionary whose values are lists of items
> with the same key.  I've got variations on [snip]
 
This is what I use:

    d[key] = d.get(key, []) + [value]

Gerhard
-- 
mail:   gerhard <at> bigfoot <dot> de       registered Linux user #64239
web:    http://www.cs.fhm.edu/~ifw00065/    OpenPGP public key id AD24C930
public key fingerprint: 3FCC 8700 3012 0A9E B0C9  3667 814B 9CAA AD24 C930
reduce(lambda x,y:x+y,map(lambda x:chr(ord(x)^42),tuple('zS^BED\nX_FOY\x0b')))





More information about the Python-list mailing list