trouble with copy/deepcopy

[Alexander]

Привет Mike!

17 мая 2005 в 16:38, Mike Meyer в своем письме к Alexander Zatvornitskiy писал:
 MM> Actually, it is shared - but only for reference. If you assign to it,
 MM> you'll create an instance variable of the same name. As Peter
 MM> explained, if you remove the instance variable, the class variable
 MM> becomes visible again. Try this:
 py>> class C:
 MM> ...   q = []
 MM> ...
 py>> c1 = C()
 py>> c2 = C()
 py>> c3 = C()
 py>> c1.q.append(1)
 py>> c2.q.append(2)
 py>> c3.q.append(3)
 py>> c1.q, c2.q, c3.q
 MM> ([1, 2, 3], [1, 2, 3], [1, 2, 3])
 py>>

It's true. Surpise!
Hence, every "non-static in c++-meaning" variable must be initialized in
constructor. It seems strange for me.

Thank you for explanation!

Alexander, zatv at bk.ru