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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def initialize(self):
 """ Initializes self.dweight and self.wed to zero matrices. """

        self.randomize()
        self.dweight = Numeric.zeros((self.fromLayer.size, \
                                      self.toLayer.size), 'f')
        self.wed = Numeric.zeros((self.fromLayer.size, \
                                  self.toLayer.size), 'f')
        self.wedLast = Numeric.zeros((self.fromLayer.size, \
                                      self.toLayer.size), 'f')