数据抽取1

from pandas import  Series

from pandas import DataFrame

from pandas import read_csv

from pandas import read_table

from pandas import read_excel

df=read_csv('E:\\PY\\DATA\\3.2.csv')

df

df
           tel
0  13821754077
1  13631241256
2  18627123378

df['tel']=df['tel'].astype(str);

bands=df['tel'].str.slice(0,3);