Selecting elements from a list

Martin Christensen knightsofspamalot-factotum at gvdnet.dk
Thu Sep 4 23:59:29 CEST 2003


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Howdy!

Suppose I have a list A containing elements that I want to put into
list B if they satisfy some property. The obvious way of doing it
would be,

B = []
for i in A:
    if A.property():
       B.append(i)

Now, list comprehensions, map() etc. can make a lot of list operations
easier, but I haven't found a shorter, more elegant way of doing this.
Have I missed something, or will I have to stick to my explicit loops?

Martin

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