Dnia Tue, 12 Aug 2008 16:39:27 +0800, =?GB2312?B?zPC5zw==?= napisa�(a): > Howdy everyone, > > I saw a strange python code in pygame project. What does "while > not(x&528or x in l):" mean? Below code works in python2.5, so "x&528" > is not HTML strings.
It looks like a check if 528 flag is set. In this way you can set more than one flag in signle variable: >>> flag1 = 1 >>> flag2 = 2 >>> flag3 = 4 >>> flag4 = 8 >>> flag5 = 10 >>> flags_set = flag2 | flag4 >>> flags_set & flag1 0 >>> flags_set & flag2 2 >>> flags_set & flag3 0 >>> flags_set & flag4 8 >>> flags_set & flag5 0 -- Regards, Wojtek Walczak, http://www.stud.umk.pl/~wojtekwa/
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