我有一个包含True / False值的列表。列表的索引是ID。列表如下所示:
遮罩:
0000003555CE050 True
0000484541CE90D True
0000486629CE4AA True
0000012748DE8FB True
0000047030DE4E4 True
0000510518CEA7C False
0000510762DE9AC False
0000510486CEF04 False
0000202438DEE9C False
0000510534CE437 False
我有一个数据框,其中也包含id列。我想从列表中保留那些具有True的id的值。我正在尝试使用以下命令过滤数据框:
df.loc[:,mask]
但是,我收到TypeError,如下:
TypeError: '(slice(None, None, None), 0000003555CE050 True
0000484541CE90D True
0000486629CE4AA True
0000012748DE8FB True
0000047030DE4E4 True
...
0000510518CEA7C False
0000510762DE9AC False
0000510486CEF04 False
0000202438DEE9C False
0000510534CE437 False
Name: ICP, Length: 92245, dtype: bool)' is an invalid key
我不确定我在哪里犯错。谁能指出我在哪里犯错了?
答案 0 :(得分:1)
让我们尝试public void WriteUsersToCSV(List<User> users)
{
// overwrite the file each time; indicated by the `false` parameter
using (var writer = new StreamWriter("users.csv", false))
using (var csvWriter = new CsvWriter(writer, CultureInfo.InvariantCulture))
{
// csvWriter.Configuration.HasHeaderRecord = false; // commented out as we write the whole file every time including the header
csvWriter.WriteRecords(users);
Console.WriteLine("New user added to users.csv");
}
}
,您需要知道ID列是哪个级别
get_level_values