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isattribute(object,cAttributeName) --> Returns True if the object contains the attribute
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isattribute(object,cAttributeName) --> Returns True if the object contains the attribute
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o1 = new point
see isattribute(o1,"x") + nl # print 1
see isattribute(o1,"t") + nl # print 0
see isattribute(o1,"y") + nl # print 1
see isattribute(o1,"z") + nl # print 1
class point x y z