Very basic alarm clock does not open webbrowser

I'm totally new to programming. Wanted to write this basic alarm clock with Python but the webbrowser just doesn't open. I think it is probably my if statement that doesn't work. Is that correct?

from datetime import datetime
import webbrowser

name = raw_input("What's your name?")
print ("Hello %s! Let me set an alarm for you. Please answer the following questions about when you want to wake up.")%(name)
alarm_h = raw_input("--> Please enter the hour when I should wake you up:")
alarm_m = raw_input("--> Please enter the exact minute of the hour:")
alarm_sound = raw_input("--> Please enter the Youtube-URL of your favorite song:")

now = datetime.today()

print ("It's now %s h : %s m. We'll wake you up at %s h : %s m." %(now.hour,   now.minute, alarm_h, alarm_m))

if now.hour == alarm_h and now.minute == alarm_m:
    webbrowser.open(alarm_sound, new=2)