On 12/17/2011 01:40 PM, YAN HUA wrote:
Hi,all. Could anybody tell how this code works? >>> root = [None, None]
First, you're creating a list of two None, let's say it's list-1. Then you bind the name 'root' to list-1.
>>> root[:] = [root, root]
Next, you assign list-1's first member with list-1 and list-1's second member with list-1.
>>> root [[...], [...]]
The result is a recursive list, both list-1's first and second member is list-1 itself.
>>> root[0] [[...], [...]] >>> root[0][0][1][1][0][0][0][1][1] [[...], [...]] >>> Thanks.
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