Loc功能在熊猫中不起作用（我的df.loc命令不起作用）

Question

df.loc在第一行上工作或不工作

我在“叙述”列中的数据是：

x 23

cricket 22

rev 11

polo 22

import os
import openpyxl
import pandas as pd
import numpy as np

narr=pd.read_csv('C:\\Users\\lenovo\\Desktop\\sports.csv')
narr.head(4)
df=pd.DataFrame(narr)
df.loc[(df.Narration == 'cricket') | (df.Narration  == 'rev'), 'name_match'] = 'Match'  
df.loc[(df.Narration == 'polo') | (df.Narration  == 'x'), 'name_match'] = 'NotMatch'
print(df)

我要得到的结果是

   Narration   name_match
0        x 23        NaN
1  cricket 22        NaN
2      rev 11        NaN
3     polo 22        NaN

Answer 1

IIUC，请尝试以下操作：

df.loc[df.Narration.str.contains('rev') | 
       df.Narration.str.contains('cricket'), 'name_match'] = 'Match'

df.loc[df.Narration.str.contains('polo') | 
       df.Narration.str.contains('x'), 'name_match'] = 'NotMatch'

df

输出：

    Narration name_match
0        x 23   NotMatch
1  cricket 22      Match
2      rev 11      Match
3     polo 22   NotMatch