How convert a list string to a real list

[Terry Reedy]

On 11/30/2011 1:20 AM, 郭军权 wrote:
> Good after
> I have a string liststr = '["aaaa","bbbb","ccc"]' ,and I need convert it
> to a list like list = ["aaaa","bbbb","ccc"],what can id do?

The easiest -- and most dangerous -- way is
 >>> eval('["aaaa","bbbb","ccc"]')
['aaaa', 'bbbb', 'ccc']

But DO NOT eval unexamined strings from untrusted sources. The reason is 
that it is much the same as letting an untrusted person sit unsupervised 
as the keyboard of your computer with a command window open. You would 
not want to eval
   "from os import system; system('<command to delete files>')"
where '<command...>' is replaced by something obnoxious for your 
operating system.

-- 
Terry Jan Reedy