code: def uniform_index(index,length):
      '''
          uniform_index(0,3)
          uniform_index(-1,3)
          uniform_index(-4,3)
          uniform_index(-3,3)
          uniform_index(5,3)
      '''
      if(index<0):
          rl = length+index
          if(rl<0):
              index = 0
          else:
              index = rl
      elif(index>=length):
          index = length
      else:
          index = index
      return(indexf uniform_index(index,length):
      '''
          uniform_index(0,3)
          uniform_index(-1,3)
          uniform_index(-4,3)
          uniform_index(-3,3)
          uniform_index(5,3)
      '''
      if(index<0):
          rl = length+index
          if(rl<0):
              index = 0
          else:
              index = rl
      elif(index>=length):
          index = length
      else:
          index = index
      return(index)
docs: uniform_index(0,3)
          uniform_index(-1,3)
          uniform_index(-4,3)
          uniform_index(-3,3)
          uniform_index(5,3)