Python 3.4 : Lists stored in a file - Iterating over characters instead of list items

Question

我有一个像这样的文件(myfile)

['user1', 1,2]
['user2',5,1]
['user3',1,2]

我想迭代文件中列表中的每个项目。我的代码如下

with open(myfile) as f:
    for line in f:
        for items in list(line):
            print(items)

它打印每个字符而不是每个单词。请帮忙。

Answer 1

您将这些行作为字符串而不是列表来读取。为了提高安全性，eval() 或 ast.literal_eval() 应该在这里实现:

with open(myfile) as f:
    for line in f:
        for items in eval(line):
            print(items)

或更安全(感谢@JaredGoguen):

import ast
with open(myfile) as f:
    for line in f:
        for items in ast.literal_eval(line):
            print(items)

希望有帮助!