null handling by replacing with column value in another dataframe

This is extension to the first video that explains how to handle nulls in the dataframe.
null handling first video - studio.youtube...
Joins - studio.youtube...

[@MohanKumar-ge4nv]

Thank you for the video. How I can create a function based on this example ? For example I have 100 columns in DataFrame1 and 100 columns in DataFrame2 now I want to replace null values in DataFrame1 with DataFrame2.
Note: Both DataFrame1 and DataFrame2 have same column names. Thanks in advance!!

[@KnowledgeSharingjkb]

are you thinking to create function that accepts the columns as parameter and then replace the values?

[@sravankumar1767]

Simply superb explanation 👌 👏

[@suchismitadash2399]

I have a situation where I need to exchange the column values between two data frames based on some criteria. I have a code ready for that as well using replace () but it is not working in few scenarios.
Can you please help. I can email you my code and data frame details

[@KnowledgeSharingjkb]

sorry missed your message. can you please paste your code here