How to setup cell borders with python-docx

Question

I need to setup cells borders in table with python-docx, but can't find how to. Please help.

Answer 1

table = document.add_table(rows, cols)
table.style = 'Table Grid'

using style with TableGrid as style ID is deprecated. Now we need to use name hence:

table.style = 'Table Grid'

Answer 2

Here is the snippet, I used in one of my projects. Works with merged cells too.

from docx.oxml import OxmlElement
from docx.oxml.ns import qn

def set_cell_border(cell: _Cell, **kwargs):
    """
    Set cell`s border
    Usage:

    set_cell_border(
        cell,
        top={"sz": 12, "val": "single", "color": "#FF0000", "space": "0"},
        bottom={"sz": 12, "color": "#00FF00", "val": "single"},
        start={"sz": 24, "val": "dashed", "shadow": "true"},
        end={"sz": 12, "val": "dashed"},
    )
    """
    tc = cell._tc
    tcPr = tc.get_or_add_tcPr()

    # check for tag existnace, if none found, then create one
    tcBorders = tcPr.first_child_found_in("w:tcBorders")
    if tcBorders is None:
        tcBorders = OxmlElement('w:tcBorders')
        tcPr.append(tcBorders)

    # list over all available tags
    for edge in ('start', 'top', 'end', 'bottom', 'insideH', 'insideV'):
        edge_data = kwargs.get(edge)
        if edge_data:
            tag = 'w:{}'.format(edge)

            # check for tag existnace, if none found, then create one
            element = tcBorders.find(qn(tag))
            if element is None:
                element = OxmlElement(tag)
                tcBorders.append(element)

            # looks like order of attributes is important
            for key in ["sz", "val", "color", "space", "shadow"]:
                if key in edge_data:
                    element.set(qn('w:{}'.format(key)), str(edge_data[key]))

Check http://officeopenxml.com/WPtableBorders.php for available attributes values