<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def getcolslice(self, columnname, blc, trc, inc=[], startrow=0, nrow=-1, rowincr=1):
 """Get a slice from a table column holding arrays. The slice in each array is given by blc, trc, and inc (as in getcellslice). The column can be sliced by giving a start row (default 0), number of rows (default all), and row stride (default 1). It returns a numpy array where the first axis is formed by the column cells. The other axes are the array axes. """

        return self._getcolslice(columnname, blc, trc, inc,
                                 startrow, nrow, rowincr)