<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def train(self):
 """ Train the pair layer and pooling layer. """

    for iDriving, cDriving in enumerate(self.drivingOperandSDRs):
      minicolumnSDR = self.minicolumnSDRs[iDriving]
      self.pairLayerProximalConnections.associate(minicolumnSDR, cDriving)
      for iContext, cContext in enumerate(self.contextOperandSDRs):
        iResult = (iContext + iDriving) % self.numLocations
        cResult = self.resultSDRs[iResult]
        self.pairLayer.compute(minicolumnSDR, basalInput=cContext)
        cPair = self.pairLayer.getWinnerCells()
        self.poolingLayer.associate(cResult, cPair)