from datetime import  date

events ={'dodo':{'bday':(2017,2,24)},
         'alex':{'bday':(2018,9,17)}}

dt = date.today()


for k,v in events.items():
    if dt == date(*v['bday']):
        print('today is ' + k  +'birthdays')
        break

else:
    print('No birthday today')