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Yes, perfect, a simple question of operands precedence! Now it all works fine!! Alex Le 23 avr. 08 à 12:26, Rodrigo B. de Oliveira a écrit : > On Wed, Apr 23, 2008 at 7:06 AM, Alexander Lamb > <> wrote: >> ... >> So, how do I express a "or" in a list comprehension? >> > > Using parens around 'or' operands seems to work. >