What does `ValueError: cannot reindex from a duplicate axis` mean?

We Are Going To Discuss About What does `ValueError: cannot reindex from a duplicate axis` mean?. So lets Start this Python Article.

What does `ValueError: cannot reindex from a duplicate axis` mean?

How to solve What does `ValueError: cannot reindex from a duplicate axis` mean?

This error usually rises when you join / assign to a column when the index has duplicate values. Since you are assigning to a row, I suspect that there is a duplicate value in affinity_matrix.columns, perhaps not shown in your question.

What does `ValueError: cannot reindex from a duplicate axis` mean?

This error usually rises when you join / assign to a column when the index has duplicate values. Since you are assigning to a row, I suspect that there is a duplicate value in affinity_matrix.columns, perhaps not shown in your question.

Solution 1

This error usually rises when you join / assign to a column when the index has duplicate values. Since you are assigning to a row, I suspect that there is a duplicate value in affinity_matrix.columns, perhaps not shown in your question.

Original Author Korem Of This Content

Solution 2

As others have said, you’ve probably got duplicate values in your original index. To find them do this:

df[df.index.duplicated()]

Original Author Matthew Of This Content

Solution 3

Indices with duplicate values often arise if you create a DataFrame by concatenating other DataFrames. IF you don’t care about preserving the values of your index, and you want them to be unique values, when you concatenate the the data, set ignore_index=True.

Alternatively, to overwrite your current index with a new one, instead of using df.reindex(), set:

df.index = new_index

Original Author Rebeku Of This Content

Solution 4

For people who are still struggling with this error, it can also happen if you accidentally create a duplicate column with the same name. Remove duplicate columns like so:

df = df.loc[:,~df.columns.duplicated()]

Original Author Parseltongue Of This Content

Conclusion

So This is all About This Tutorial. Hope This Tutorial Helped You. Thank You.

Also Read,

ittutorial team

I am an Information Technology Engineer. I have Completed my MCA And I have 4 Year Plus Experience, I am a web developer with knowledge of multiple back-end platforms Like PHP, Node.js, Python and frontend JavaScript frameworks Like Angular, React, and Vue.

Leave a Comment