>>> list8=list7[:]
>>> list9=list7
>>> list8
[7, 6, 5, 4, 4, 3, 2, 0]
>>> list9
[7, 6, 5, 4, 4, 3, 2, 0]
>>> list7.sort()
>>> list8
[7, 6, 5, 4, 4, 3, 2, 0]
>>> list9
[0, 2, 3, 4, 4, 5, 6, 7]
>>> list7
[0, 2, 3, 4, 4, 5, 6, 7]
>>> list9=list7
>>> list8
[7, 6, 5, 4, 4, 3, 2, 0]
>>> list9
[7, 6, 5, 4, 4, 3, 2, 0]
>>> list7.sort()
>>> list8
[7, 6, 5, 4, 4, 3, 2, 0]
>>> list9
[0, 2, 3, 4, 4, 5, 6, 7]
>>> list7
[0, 2, 3, 4, 4, 5, 6, 7]
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