CODE EXAMPLE FOR PYTHON

add border to table in python pptx

from pptx.oxml.xmlchemy import OxmlElement

def SubElement(parent, tagname, **kwargs):
        element = OxmlElement(tagname)
        element.attrib.update(kwargs)
        parent.append(element)
        return element

def _set_cell_border(cell, border_color="000000", border_width='12700'):
    tc = cell._tc
    tcPr = tc.get_or_add_tcPr()
    for lines in ['a:lnL','a:lnR','a:lnT','a:lnB']:
        ln = SubElement(tcPr, lines, w=border_width, cap='flat', cmpd='sng', algn='ctr')
        solidFill = SubElement(ln, 'a:solidFill')
        srgbClr = SubElement(solidFill, 'a:srgbClr', val=border_color)
        prstDash = SubElement(ln, 'a:prstDash', val='solid')
        round_ = SubElement(ln, 'a:round')
        headEnd = SubElement(ln, 'a:headEnd', type='none', w='med', len='med')
        tailEnd = SubElement(ln, 'a:tailEnd', type='none', w='med', len='med')