python: how to get all members of an array except for ones that match a condition

Question

I'm trying to create an array of all .asm files I need to build except for one that is causing me trouble right now. Here's what I have, based on the Scons "Handling Common Cases" page:

projfiles['buildasm'] = 
  ['#build/'+os.path.splitext(x)[0]+'.asm' for x in projfiles['a']];

(this maps paths of the form 'foo.a' to '#build/foo.asm')

I want to run this for each member of projfiles['a'] except if a member of the array matches 'baz.a'. How can I do this?

Answer 1

projfiles['buildasm'] = ['#build/'+os.path.splitext(x)[0]+'.asm' for x in projfiles['a'] if x != 'baz.a']

or more generally:

ignored_files = ['baz.a',
                 'foo.a',
                 'xyzzy.a',
                 ]
projfiles['buildasm'] = ['#build/'+os.path.splitext(x)[0]+'.asm' for x in projfiles['a'] if x not in ignored_files]