else in list comp

David Eppstein eppstein at ics.uci.edu
Wed Jan 29 06:36:32 CET 2003

In article <mailman.1043813212.6357.python-list at python.org>,
 Cliff Wells <clifford.wells at attbi.com> wrote:

> Given the list:
> l = ['mary', 'had', 'a', 'little', None]
> it should get mapped to ['mary', 'had', 'a', 'little', '']

[x or '' for x in l]

btw, l is a bad letter to use for a variable name (easy to confuse with 
1 or I or even |).

David Eppstein       UC Irvine Dept. of Information & Computer Science
eppstein at ics.uci.edu http://www.ics.uci.edu/~eppstein/

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