#Slice(start, end)

from pandas import read_csv

df = read_csv(

'D:\\PDA\\4.6\\data.csv'

)

#修改電話號碼的格式

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

#運營商抽取

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

#地區(qū)

areas = df['tel'].str.slice(3, 7)

#號碼段

nums = df['tel'].str.slice(7, 11)

#賦值回去

df['bands'] = bands

df['areas'] = areas

df['nums'] = nums