How to change font size of text within a table created by Python-pptx

Question

I am creating a script to show graphs of product performance and creating a table to display its partnumber, a list of applications and the number of current applications.

However, the default font size is much too large to get all of this information into the slide and needs to be reduced.

How do I reduce the font size of text within a table in Python-pptx?

This is what I have, but I keep getting an error "AttributeError: '_Cell' object has no attribute 'paragraph'"

table = shapes.add_table(rows, cols, left + left_offset, top + Inches(.25), width, height - Inches(.25)).table
#column width
for i in range(3):
    table.columns[i].width = col_width[i]           
    for i in range(len(a_slide)):
        #color table
        if i % 2 == 0:
            for j in range(3):
                fill = table.cell(i, j).fill
                fill.background()
        else:
            for j in range(3):
                fill = table.cell(i, j).fill
                fill.solid()
                fill.fore_color.rgb = RGBColor(240, 128, 128)
        #populate table
        table.cell(i, 0).text = str(item["name"])
        try:
            table.cell(i, 1).text = ", ".join(item["app"])
        except:
            table.cell(i, 1).text = " "
        finally:
            table.cell(i, 2).text = str(item["vio"])
            for j in range(0,3):
                font = table.cell(i, j).paragraph[0].font
                font.size = Pt(12)

Answer 1

A _Cell object doesn't directly contain paragraphs. However, it does include a TextFrame object on .text_frame which contains the paragraphs. So if you just use:

cell.text_frame.paragraphs[0]

..you should get what you expect. Note that it's .paragraphs, not .paragraph.

The API documentation for _Cell is here: http://python-pptx.readthedocs.io/en/latest/api/table.html#cell-objects

and generally provides all the details needed to resolve the finer points like this one.