I'm trying to add values from a column in a Dataframe on Python with pandas, depending on the values of another column. If one row in a column is "non", I'd like to apply a specific task (put 0 in a another column) If one row in the same column is "oui", I'd like to add the value of the same row of another column.
I have a Dataframe which looks like that :
| décennie | FR | total | oui | 
|---|---|---|---|
| 1760-1769 | oui | 7 | |
| 1760-1769 | non | 1 | |
| 1770-1779 | non | 3 | |
| 1780-1789 | non | 4 | |
| 1790-1791 | oui | 4 | 
And I would like to fill the column "oui" with the following condition :
- If the value in the column "FR" --> non : put the value "0" in the column "oui"
 - If the value in the column "FR" --> oui : put the value of the column "oui"
 
Example
| décennie | FR | total | oui | 
|---|---|---|---|
| 1760-1769 | oui | 7 | 7 | 
| 1760-1769 | non | 1 | 0 | 
| 1770-1779 | non | 3 | 0 | 
| 1780-1789 | non | 4 | 0 | 
| 1790-1791 | oui | 4 | 4 | 
Any idea ?
Thanks a lot for your ideas !