Why do I get the same value for all the different maturities if statement? [closed]

DateFrame df that I got from web-scraping :

• Date d'échéance : due date# date 12-10-2018
• Transaction : Transaction#float64 104.11
• Taux moyen pondéré : weighted average rate#2.3%
• Date de la valeur : value date#date 11-09-2018
• maturite : maturity (calculated)# 27 days

I should add column to my dataframe df called " Taux act" :

• If Maturity 'maturite' > 1 YEAR : Taux act = weighted average rate 'Taux moyen pondéré'
• If Maturity < 1 YEAR : Taux act = ((1 + weighted average rate maturity)/360)**(365/maturity)-1