On Jun 20, 10:53 pm, Steven D'Aprano <st...@remove-this- cybersource.com.au> wrote: > On Sun, 20 Jun 2010 03:19:55 -0700, southof40 wrote: > > I have list of of N Vehicle objects - the only possible vehicles are > > cars, bikes, trucks. > > > I want to select an object from the list with a probability of : cars > > 0.7, bikes 0.3, trucks 0.1. > > That adds to a probability of 1.1, which is impossible. > > I'm going to assume that bikes is a typo and should be 0.2. > > cars = [car1, car2] > bikes = [bike1, bike2, bike3, bike4, bike5, bike6] > trucks = [truck1, truck2, truck3, truck4] > > x = random.random() > if x < 0.7: > return random.choice(cars) > elif x < 0.9: > return random.choice(bikes) > else: > return random.choice(trucks) > > But surely this is not physically realistic? The probability of selecting > a car would normally depend on the number of cars, and not be set before > hand. > > -- > Steven
Nice solution thanks. -- http://mail.python.org/mailman/listinfo/python-list
