'Create a new columns to show the month of last spend in Pandas
I am working on a spend data where I want to see the last month when the spend was made in current and previous year. If there is no spend in these years, then, I assume the last month of spend as Dec-2020.
My data looks like this
As shown in the data the months are already there in the form of columns.
I want to create a new column last_txn_month which gives last month when the spend was made. So the output should look like this:
Sources
This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.
Source: Stack Overflow
| Solution | Source |
|---|