Question

我有一个excel电子表格的数据框，我在其中找到了每个域发生的频率。我想将域频率计数添加到它的相应域。

     index   domain        extractor       Frequency
      0       linkedin.com  skipped            2
      1       facebook.com  skipped            5
      2       hi5.com       skipped            1 
      ....

以下是查找频率并尝试将其添加到相应域的代码。

cnt = Counter()  

for row_index, row in df.iterrows():

    cnt[row['domain']] += 1

    for i in cnt:
        frequency = cnt

        if i in row['domain']:
            df['Frequency'] = df.loc[:(cnt[i])]

当我从数据框中打印出频率时：

Index    url                                                   Frequency  
 0       https://www.linkedin.com/in/dgerstenblatt                 0  
 1       http://www.linkedin.com/in/darren-cfbs-5465872            1  
 2       http://www.hi5.com/friend/p39168004--profile--...         2  
 3       http://license.reg.state.ma.us/pubLic/pubLicen...         3  
 4       http://license.reg.state.ma.us/pubLic/pubLicen...         4  
 5       http://profiles.friendster.com/3523606                    5  
 6       http://www.lenoxadvisors.com/biographies/darre...       NaN  
 7       http://10digits.us/n/Darren_Gerstenblatt/Newto...       NaN  
 8       http://www.facebook.com/people/_/692786728              NaN

Answer 1

正如Nehal所说，这是正确的解决方案。 stackoverflow.com/q/22391433/1005215

将行添加到dataframe列

1 个答案: