Bugs item #1652387, was opened at 2007-02-05 13:35
Message generated for change (Comment added) made by gbrandl
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Category: Build
Group: Python 2.5
>Status: Closed
>Resolution: Invalid
Priority: 5
Private: No
Submitted By: kkelchev (kkelchev)
Assigned to: Nobody/Anonymous (nobody)
Summary: Nested Objects scope problem
Initial Comment:
K = MyObj()
K.Lines.append('First line to Obj "K"')
K.Lines.append('Second line to Obj "K"')
L = MyObj()
L.Lines.append('First line to Obj "L"')
print 'Lines from Obj "K"',K.Lines
print 'Lines from Obj "L"',L.Lines
Result is:
[Dbg]>>>
Lines from Obj "K" ['First line to Obj "K"', 'Second line to Obj "K"', 'First
line to Obj "L"']
Lines from Obj "L" ['First line to Obj "K"', 'Second line to Obj "K"', 'First
line to Obj "L"']
>>>
Why data appended into nested list filed “Lines” into different object “K” and
“L” appears in both objects ?
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>Comment By: Georg Brandl (gbrandl)
Date: 2007-02-05 18:31
Message:
Logged In: YES
user_id=849994
Originator: NO
Sadly you didn't attach the definition of the class "MyObj".
I assume it is like this:
class MyObj:
Lines = []
In this case, the Lines list object is shared by all instances of MyObj.
Please post to the python-list mailing list for further questions about
this behavior.
If your bug is different, please feel free to reopen this.
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https://sourceforge.net/tracker/?func=detail&atid=105470&aid=1652387&group_id=5470
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