different binding behavior

[Gabriel Zachmann]

It seems to me that the following behavior of python (2.4.1) is inconsistent:

 >>> a=1
 >>> b=a
 >>> a+=1
 >>> b
1
 >>> a
2
 >>> a=[1,2]
 >>> b=a
 >>> b+=[3]
 >>> a
[1, 2, 3]
 >>> b
[1, 2, 3]

Why was it implemented like this??

Best regards,
Gabriel.

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