About Pycharm:
when you find it can not find these module like pandas
you may pay attention to your virtual env set up
from file-setting project interpreter: make sure it is your default pathway of your anaconda python( for your anaconda integration )
remember that when you are adding interpreter，don't forget to press the Green button !!! so that you can manage the packages you needs better.
以上是上午出现的一点小毛病；
上老师建议的程序，其间各种警告，解决后运行出来了，下面看一下作者的步骤介绍，使用的方法，分析每个in、out步骤：
晚上写分析；