python in bd

try:
    conn = sqlite3.connect("db.sqlite")
    cursor = conn.cursor()

    category = ','.join(categories)

    sql = """
    UPDATE Users
    SET Categories = 'None{}'
    WHERE Categories = '{}'
    """.format(call.from_user.id, category)

    cursor.execute(sql)
    conn.commit()
    except Error as e:
        print(e)
    finally:
        conn.close()