def get_html(url):
req = urllib.request.Request(url, headers={'User-Agent': 'Mozilla/5.0'})
response = urllib.request.urlopen(req)
return response.read()

def add_to_db(chars, desc):
conn = pymysql.connect(host='localhost',
    port=3307,
    user='***',
    password='***',
    db='***',
    charset='utf8',
    cursorclass=pymysql.cursors.DictCursor)

global _id
with conn.cursor() as cursor:
    sql = "INSERT INTO `articles` (`id_cat`, `characteristics`, `description`) VALUES (%s, %s, %s)"
    cursor.execute(sql, (_id, chars, desc))
conn.commit()