如何使用python将字符串[[]]转换为数组

Question

In my data frame,one of column has string values as array look.I get them and stored in an array.Then array look like,

S=['[18831]', '[12329]', '[4526, 5101, 11276]', '[14388, 14389]'] 

I want it to be

S= [18831,12329,[4526, 5101, 11276],[14388, 14389]] 

as 2d array to access this IDs.How to do this using python

Answer 1

Those lists are in JSON format so you could use the built in JSON parser.

import json
stringArray = "[1,2,3]"
integerArray = json.loads(stringArray) # [1,2,3]

Check out https://docs.python.org/2/library/json.html

Answer 2

尝试这个：

[eval(a)[0] if len(eval(a)) == 1 else eval(a) for a in S]