Pythonデータベースフォーマット出力ドキュメント

import mysql.connector

#     page   
def fetch_data_from_db(page):
    cmd = 'select * from xxx order by id limit ' + str(page * 50) + ', ' + str(50)
    conn = mysql.connector.connect(user='xxx', password='xxx', database='xxx')
    cursor = conn.cursor()
    cursor.execute(cmd)
    values = cursor.fetchall()
    conn.commit()
    cursor.close()
    conn.close()  
    return values 

import os
# python    
def export_format_md(page, books):
    fileName = '     ' + str(page) + ' .md'
    #       
    fd = open(fileName, 'a')
    fd.write('  : 



')
    fd.write('|  |  |  |
')
    fd.write('|:-|:-|:-|
')
    for book in books:
        fd.write('|' + "{0:04d}".format(book[0]) + '|' + book[2] + '|' + book[1] + '
')

from docx import Document
from docx.shared import Cm

def export_format_md(page, books):
    fileName = '     ' + str(page) + ' .docx'
    document = Document()
    table = document.add_table(rows = 51, cols = 3) #      
    table.cell(0, 0).text = "  "
    table.cell(0, 1).text = "  "
    table.cell(0, 2).text  = "  "
    for index, book in enumerate(books):
        table.cell(index+1, 0).text = "{0:05d}".format(book[0])
        table.cell(index+1, 1).text = book[2]
        table.cell(index+1, 2).text = book[1]
    document.save(fileName)

if __name__ == '__main__':
    args = sys.argv
    if len(args) == 2:
        #     
        page = args[1] 
        books = fetch_data_from_db(page)
        export_format_md(page, books)

python3 xxxx.py 0