code: def getcolnp(self, columnname, nparray, startrow=0, nrow=-1, rowincr=1):
          
          if (not nparray.flags.c_contiguous) or nparray.size == 0:
              raise ValueError("Argument 'nparray' has to be a contiguous " +
                               "numpy array")
          return self._getcolvh(columnname, startrow, nrow, rowincr, nparray)
docs: Get the contents of a column or part of it into the given
          numpy array.
  
          The numpy array has to be C-contiguous with a shape matching the
          shape of the column (part). Data type coercion will be done as needed.
  
          If the column contains arrays, they should all have the same shape.
          An exception is thrown if they differ in shape. In that case the
          method :func:`getvarcol` should be used instead.
  
          The column can be sliced by giving a start row (default 0), number of
          rows (default all), and row stride (default 1).