close

How can I add a column from one dataframe to another dataframe?

Hello Guys, How are you all? Hope You all Are Fine. Today We Are Going To learn about How can I add a column from one dataframe to another dataframe in Python. So Here I am Explain to you all the possible Methods here.

Without wasting your time, Let’s start This Article.

Table of Contents

How can I add a column from one dataframe to another dataframe?

  1. How can I add a column from one dataframe to another dataframe?

    The data types in df1 are all integer and the data type for df2 is string. Whenever I merge/concat/join, I get NaN instead of the right data.

  2. add a column from one dataframe to another dataframe

    The data types in df1 are all integer and the data type for df2 is string. Whenever I merge/concat/join, I get NaN instead of the right data.

Method 1

if you want to add the column at the end, you can use

df1['columename']= df2['existing_colume_name']

and after that apply

df1.column_name = df1.column_name.astype(float)

This worked for me !

Method 2

The data types in df1 are all integer and the data type for df2 is string. Whenever I merge/concat/join, I get NaN instead of the right data.

If you want to add the df2 value to the df1 value, you need to convert the df2 field to an integer.

df2['FieldName'] = df2['FieldName'].astype(int)

Conclusion

It’s all About this issue. Hope all Methods helped you a lot. Comment below Your thoughts and your queries. Also, Comment below which Method worked for you? Thank You.

Also, Read