将表示列表的字符串转换为实际的列表对象
问题描述
我有一个代表列表的字符串:
I have a string that represents a list:
"[22, 33, 36, 41, 46, 49, 56, 72, 85, 92, 95, 98, 107, 118, 120, 123, 124, 126, 127, 130, 149, 157, 161, 171, 174, 177, 187, 195, 225, 302, 316, 359, 360, 363, 396, 479, 486, 491]"
我想把这个字串变成一个实际的列表.我想可以正则表达式输出数字然后循环(append())但是有没有更简单的方法?不知道如何将其设置为正则表达式.
I would like to turn that litteral string into an actual list. I suppose to could regex out the numbers and loop over then (append()) but is there an easier way? Not sure how I would set that up as a regex.
解决方案
使用 ast.literal_eval.
>>> import ast
>>> i = ast.literal_eval('[22, 33, 36, 41, 46, 49, 56]')
>>> i[3]
41
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