今天给大家讲讲pandas库dataframe数据结构的索引问题,今天就讲讲ix的用法。
import pandas as pd
import pymysql
conn = pymysql.connect(host='localhost', user='root', passwd='123456', db='test', port=3306, charset='utf8')
jianshu = pd.read_sql('select * from jianshu1',conn)
jianshu
选择前四行
jianshu.ix[0:3]
选择第4行和第6行
jianshu.ix[[3,5]]
jianshu.ix[:,0:3]
选择view和gain
jianshu.ix[:,['view','gain']]
jianshu.ix[[2,4],['user','title']]