a small program where a plant grows 1 seed a week, and that one seed plants other plants. Also every week the plant gains one seed in total. it takes 2 inputs, how many people and how many starting plants.

funnyPlant.py

class funnyPlant(object):
    def __init__(self):
        self.seed = 0
    def addSeed(self):
        self.seed += 1
    def getSeed(self):
        return int(self.seed)
        
class plantSolver(object):
    def __init__(self,numOfPeople,startingPlants):
        self.startingPlants = int(startingPlants)
        self.numOfPeople = int(numOfPeople)
        self.plants = []
        self.totalSeeds = 0
        self.week = 0
    def solvePlants(self):
        for i in range(0,int(self.startingPlants)):
            self.plants.append(funnyPlant())
        while self.totalSeeds < self.numOfPeople:
            for i in range(0,self.totalSeeds):
                self.plants.append(funnyPlant())
            self.week += 1
            for p in self.plants:
                self.totalSeeds += p.getSeed()
                p.addSeed()
            for i in range(0,int(self.startingPlants)):
                self.plants.append(funnyPlant())
        return self.week
            
def main():
    print "Main:"
    numOfPeople = raw_input("Num of people:")
    startPlants = raw_input("Starting plants:")
    print plantSolver(numOfPeople,startPlants).solvePlants(),"weeks"

if __name__ == "__main__":
    main()