获取满足条件的Pandas DataFrame行的整数索引? [英] Getting the integer index of a Pandas DataFrame row fulfilling a condition?

问题描述

我有以下DataFrame:

I have the following DataFrame:

   a  b  c
b
2  1  2  3
5  4  5  6

如您所见，列b用作索引.我想获取满足('b' == 5)的行的序号，在这种情况下为1.

As you can see, column b is used as an index. I want to get the ordinal number of the row fulfilling ('b' == 5), which in this case would be 1.

要测试的列可以是索引列(在这种情况下，如b)或常规列，例如我可能想找到满足('c' == 6)的行的索引.

The column being tested can be either an index column (as with b in this case) or a regular column, e.g. I may want to find the index of the row fulfilling ('c' == 6).

推荐答案

您可以使用返回的值是一个数组，因为一列中可能有多个具有特定索引或值的行.

The value returned is an array since there could be more than one row with a particular index or value in a column.

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