python - 如何根据列名称过滤数据框的内容

Question

我想根据列名称过滤数据框(带有文本)。 对于给定的列，如果某个项目包含该列的名称，则保留该项目，如果不包含该项目，则将其删除。 给定行的内容是相同的。

考虑这个数据框:

dog                     cat                     monkey
The cat is beautiful    The cat is beautiful    The cat is beautiful
The dog is beautiful    The dog is beautiful    The dog is beautiful
The monkey is beautiful The monkey is beautiful The monkey is beautiful

以及预期:

dog                     cat                     monkey
The dog is beautiful    The cat is beautiful    The monkey is beautiful

谢谢你，

问候，

Answer 1

你可以试试这个:

df.where(df.apply(lambda x: x.str.contains(x.name))).bfill().head(1)

输出:

                    dog                   cat                   monkey
0  The dog is beautiful  The cat is beautiful  The monkey is beautiful