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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 _print_table(rows, header=True):
 """Print a list of lists as a pretty table. Keyword arguments: header -- if True the first row is treated as a table header inspired by http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/267662 """

    border = "="
    # vertical delimiter
    vdelim = " | "
    # padding nr. of spaces are left around the longest element in the
    # column
    padding = 1
    # may be left,center,right
    justify = 'right'
    justify = {'left'   : str.ljust,
               'center' : str.center,
               'right'  : str.rjust}[justify.lower()]
    # calculate column widths (longest item in each col
    # plus "padding" nr of spaces on both sides)
    cols = zip(*rows)
    colWidths = [max([len(str(item))+2*padding for item in col]) for col in cols]
    borderline = vdelim.join([w*border for w in colWidths])
    for row in rows:
        print(vdelim.join([justify(str(item),width) for (item,width) in zip(row,colWidths)]))
        if header:
            print(borderline)
            header=False