Python - Necesito Mostrar el promedio de edad de las mujeres, sacada de una lista

#!/usr/bin/env python3

import datetime

current_year = datetime.datetime.now().year

dates_str = ['02/05/1943', '07/09/1984', '30/08/1995', '21/12/1967']

ages = [current_year - dob for dob in [datetime.datetime.strptime(date_str, '%d/%m/%Y').date().year for date_str in dates_str]]

print(sum(ages)/len(ages))

import datetime

def calculateAge(birthDate):

    today = datetime.date.today()

    return today.year - birthDate.year - ((today.month, today.day) < (birthDate.month, birthDate.day))

dates_str = ['02/05/1943', '07/09/1984', '30/08/1995', '21/12/1967']

ages = [calculateAge(datetime.datetime.strptime(date_str, '%d/%m/%Y')) for date_str in dates_str]

print(sum(ages)/len(ages))