> parinfo = [{'value':0., 'fixed':0, 'limited':[0,0], 'limits':[0.,0.]}]*6
With this, you are creating a list with 6 references to the same list. Note that the left operand of '*' is evaluated only once before "multiplying" it six times. Regards, Tito -- http://mail.python.org/mailman/listinfo/python-list