ImportError: attempted relative import with no known parent package

代码：

from .packages import six
from .packages.six.moves.http_client import HTTPConnection as _HTTPConnection
from .packages.six.moves.http_client import HTTPException  # noqa: F401

报错：

ImportError: attempted relative import with no known parent package

解决办法：
将相对路径换为绝对路径

from urllib3.packages import six
from urllib3.packages.six.moves.http_client import HTTPConnection as _HTTPConnection
from urllib3.packages.six.moves.http_client import HTTPException  # noqa: F401