Python: Pandas filter string data based on its string length

Question

I like to filter out data whose string length is not equal to 10.

If I try to filter out any row whose column A\'s or B\'s string length is not equal to 10, I tried

Answer 1

If You have numbers in rows, then they will convert as floats.

Convert all the rows to strings after importing from cvs. For better performance split that lambdas into multiple threads.