Не создается файл с данными при парсинге сайта - Python

#!/usr/bin/env python3.6
# _*_ coding:utf-8 _*_
import requests
from bs4 import BeautifulSoup
import csv
 
def get_html(url):
    r = requests.get(url)
    return r.text
 
def get_total_pages(html):
    soup = BeautifulSoup(html, 'lxml')
 
    pages = soup.find('div', class_='pagination-pages').find_all('a', class_='pagination-page')[-1].get('href')
    total_pages = pages.split('=')[1].split('&')[0]
 
    return int(total_pages)

def write_csv(data):
    with open('avito.csv', 'a') as f:
        writer = csv.writer(f)
 
        writer.writerow((data['title'],
                         data['price'],
                         data['address'],
                         data['time'],
                         data['url']))
 
def get_page_data(html):
    soup = BeautifulSoup(html, 'lxml')
 
    ads = soup.find('div', class_='catalog-list').find_all('div', class_='item_table')
 
    for ad in ads:
        #title, price, address, time, url
        try:
            title = ad.find('div', class_='description').find('h3').text.strip()
        except:
            title = ''
 
        try:
            url = 'https://www.avito.ru' + ad.find('div', class_='description').find('h3').find('a').get('href')
        except:
            url = ''
 
        try:
            price = ad.find('div', class_='about').text.strip()
        except:
            price = ''
 
        # try:
        #     metro =
 
        try:
            address = ad.find('p', class_='address').text.strip()
        except:
            address = ''
 
        try:
            time = ad.find('div', class_='data').find('div', class_='date').text.strip()
        except:
            time = ''
 
            data = {'title': title,
                    'price': price,
                    'address': address,
                    'time': time,
                    'url': url}
 
            write_csv(data)

def main():
    url = 'https://www.avito.ru/novosibirsk/kvartiry/sdam/na_dlitelnyy_srok/1-komnatnye?p=1&i=1&pmax=14000&user=1'
    base_url = 'https://www.avito.ru/novosibirsk/kvartiry/sdam/na_dlitelnyy_srok/1-komnatnye?'
    page_part = 'p='
    query_part = '&i=1&pmax=14000&user=1'
 
    total_pages = get_total_pages(get_html(url))
 
    for i in range(1, total_pages+1):
        url_gen = base_url + page_part + str(i) + query_part
        #print(url_gan)
        html = get_html(url_gen)
        get_page_data(html)

if __name__ == '__main__':
    main()