python的版本问题

python3自带工具-python2转python3

1. path 找到python3安装路径
2. 打开其下\Tools\scripts\, 找到2to3.py
3. 其中使用-w时, 有
   1. 批量写回目录下所有文件-w E:\Dir_Path\
   2. 写回单个文件-w E:\Dir_Path\File_Name.py

导入six.moves模块

six是用于兼容python2与python3写法的包. The six.moves module provides those modules under a common name for both Python2 and 3 (mostly by providing the Python2 module under the name of the Python 3 module). 具体用法为:

from six.moves import urllib