这段时间用pandas做数据分析，
import pandas.io.data as web
然后得到下面的错误提示
"The pandas.io.data module is moved to a separate package "
ImportError: The pandas.io.data module is moved to a separate package (pandas-datareader). After installing the pandas-datareader package (https://github.com/pandas-dev/pandas-datareader), you can change the import ``from pandas.io import data, wb`` to ``from pandas_datareader import data, wb``.
原来是迁移到了pandas-datareader包，但是
import pandas-datareader.io.data as web
仍然错误，于是我进Pypi查了一下这个包，原来这个包从0.19.0已经不再支持 pandas.io.data 和 pandas.io.wb，需将pandas.io换成pandas_datareader，即
import pandas_datareader.data as web