In-class notes for 05/02/2014

CS 121B (CS1), Spring 2014

• Homework assignment

Submitted questions on assignments and technology

• Optional argument for Garden constructor

  • Specs: Plant, original Garden, revision to Garden,

  • Implementing optional arguments

  • Solution:

    
    from Plant import Plant
    
    class Garden:
        '''Represents a collection of biological plants
           State variable:
             plants - list of Plant objects'''
    
        def __init__(self, lis = []):
            self.plants = lis
    
        def getPlant(self, index):
            if index < 0 or index >= len(self.plants):
                return False
            return self.plants[index]
    
        def size(self):
            return len(self.plants)
    
        def addPlant(self, pl):
            self.plants = self.plants + [pl]
            return len(self.plants)-1
    
    def main():
        lis = [ Plant('white oak', 1900), Plant('tulip', 950) ]
        g1 = Garden(lis)
        g2 = Garden()
        print(g2.size())
        tree = Plant('red oak', 1042)
        g2.addPlant(tree)
        g2.addPlant(Plant('rose', 2.7))
        print(g2.size())
        print(g2.getPlant(1))
        print(g2.getPlant(1).getMass())
        print(g2.getPlant(1).setMass(2.85))
        print(g1.getPlant(0).getMass())
    
    main()
    
    

Project team formation, proposals, feedback

• Team project proposal form

• Features list

• Using objects

Next steps in project

• As a team, please submit a planning sheet google doc and share it with Prof. Brown

  • See description of the planning sheet in "HW31" (not really a homework, just a convenient way to present it...)

  • Submit your google doc using a special title by sharing with two accounts for Prof. Brown, as described here

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