Bugs item #1506799, was opened at 2006-06-15 13:03
Message generated for change (Settings changed) made by tim_one
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Category: None
>Group: Not a Bug
>Status: Closed
>Resolution: Invalid
Priority: 5
Submitted By: SPlyer (splyer)
Assigned to: Nobody/Anonymous (nobody)
Summary: list bug
Initial Comment:
When i define class with list member(in class body, not
in __init__ or other method) that list become common
for all instances of the class. So when i change list
member in one instance it also will changed in all the
other instances. OS - Windows XP(SP2)
[code]
class TestClass:
t = []
def __init__ (self):
pass
a = TestClass()
b = TestClass()
a.t.append(123)
print b.t
[/code]
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>Comment By: Tim Peters (tim_one)
Date: 2006-06-15 13:14
Message:
Logged In: YES
user_id=31435
Closing as Not-a-Bug. That's exactly what should happen.
If you want a different `t` per instance, use a different
`t` per instance instead of sharing a common `t` across all
instances -- you simply got what you asked for here. If
that's not what you want, then, e.g., put "self.t = []" in
your __init__ method.
----------------------------------------------------------------------
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