有一个文本文件每一行都是list形式，现在想要获取每一行的url
    参考：https://www.delftstack.com/zh/howto/python/python-string-to-list/

    1. ['https://private.zkh360.com/PRODUCT/vpi/PRO/20191213/AA0138434-1-1.jpg?x-oss-process=style/common_style&timestamp=1597979775000', 'https://private.zkh360.com/PRODUCT/vpi/PRO/20191213/AA0138434-1-2.jpg?x-oss-process=style/common_style&timestamp=1597979775000', 'https://private.zkh360.com/PRODUCT/vpi/PRO/20191213/AA0138434-1-3.jpg?x-oss-process=style/common_style&timestamp=1597979775000', 'https://private.zkh360.com/PRODUCT/vpi/PRO/20191213/AA0138434-1-4.jpg?x-oss-process=style/common_style&timestamp=1597979775000', 'https://private.zkh360.com/PRODUCT/vpi/PRO/20191213/AA0138434-1-5.jpg?x-oss-process=style/common_style&timestamp=1597979775000']

    使用python的ast()方法（为什么不直接遍历每行的list？因为读入文件为字符串类型：”[https://private.zkh360.com/PRODUCT/vpi/PRO/20191213/AA0138434-1-1.jpg]”，并不是list类型）

    1. import ast
    2. string = "['https://private.zkh360.com/PRODUCT/vpi/PRO/20191213/AA0138423-1-1.jpg?x-oss-process=style/common_style&timestamp=1597979775000', 'https://private.zkh360.com/PRODUCT/vpi/PRO/20191213/AA0138423-1-2.jpg?x-oss-process=style/common_style&timestamp=1597979775000', 'https://private.zkh360.com/PRODUCT/vpi/PRO/20191213/AA0138423-1-3.jpg?x-oss-process=style/common_style&timestamp=1597979775000', 'https://private.zkh360.com/PRODUCT/vpi/PRO/20191213/AA0138423-1-4.jpg?x-oss-process=style/common_style&timestamp=1597979775000', 'https://private.zkh360.com/PRODUCT/vpi/PRO/20191213/AA0138423-1-5.jpg?x-oss-process=style/common_style&timestamp=1597979775000']"
    3. list_data = ast.literal_eval(string)
    4. for i in list_data:
    5.     print(i)
    7. # 输出
    8. https://private.zkh360.com/PRODUCT/vpi/PRO/20191213/AA0138423-1-1.jpg?x-oss-process=style/common_style&timestamp=1597979775000
    9. https://private.zkh360.com/PRODUCT/vpi/PRO/20191213/AA0138423-1-2.jpg?x-oss-process=style/common_style&timestamp=1597979775000
    10. https://private.zkh360.com/PRODUCT/vpi/PRO/20191213/AA0138423-1-3.jpg?x-oss-process=style/common_style&timestamp=1597979775000
    11. https://private.zkh360.com/PRODUCT/vpi/PRO/20191213/AA0138423-1-4.jpg?x-oss-process=style/common_style&timestamp=1597979775000
    12. https://private.zkh360.com/PRODUCT/vpi/PRO/20191213/AA0138423-1-5.jpg?x-oss-process=style/common_style&timestamp=1597979775000

    image.png