[EMAIL PROTECTED] wrote: > Already thanks for the reply, > > but how to write your own copy operator? Won't you always be passing > referrences to new_obj?
for example this would work >>> class X(object): ... def __init__(self,lst): ... self.lst = lst ... def copy(self): ... return X(self.lst[:]) ... def __str__(self): ... return "lst has id %i" % id(self.lst) ... >>> x=X([1,2,3]) >>> y=x.copy() >>> print x lst has id 1078097132 >>> print y lst has id 1078097228 but I don't like that in this case self.lst must be passed through __init__ I can think of another variant >>> class Y(object): ... def fill(self): ... self.lst = [randint(i*10,(i+1)*10) for i in xrange(5)] ... def __repr__(self): ... return "lst has id = %i" % id(self.lst) ... def copy(self): ... ret = Y() ... ret.lst = self.lst[:] ... return ret ... >>> from random import randint >>> y=Y() >>> y.fill() >>> y lst has id = 1078097452 >>> print y lst has id = 1078097452 >>> x=y.copy() >>> x lst has id = 1078097004 ... anyone? are there better approaches? Regards, Daniel -- http://mail.python.org/mailman/listinfo/python-list
