Не хочет компилироваться

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_='paginate').find_all('a', class_="btn btn-default")[-1].get('href')
    total_pages = pages.split('=')[1]
    return int(total_pages)
 
 
def write_csv(data):
    with open('grin.csv', 'a') as f:
wrirer = csv.writer(f)
        writer.writerow( data['title'],
                     data['url'],
                     data['itle'] )
 
def get_page_data(html):
    soup = BeautifulSoup(html, 'lxml')
    ads = soup.find('div', class_='playlist').find_all('div', class_='song-item')
    for ad in ads:
       try:
           title = ad.find('div', class_='name').find('a').text.strip()
       except:
           title = ''
 
 
    try:
            url = ad.find('div', class_='name').find('a').get('href')
    except:
           url = ''
    itle = ad.find('div', class_='params clearfix').text.strip('')
    except:
          itle = ''
data = {'title':title,
        'url':url,
        'itle':itle}
write_csv(data)
 
 
 
 
 
def main():
url = 'http://mp3party.net/collection/new-songs?page=1'
base_url ='http://mp3party.net/collection/new-songs?'
page_part = 'page='
total_pages = get_total_pages(get_html(url))
 
for i in range(1, total_pages):
        url_gen = base_url + page_part + str(1)
        html = get_html(url_gen)
        get_page_data(html)
 
 
 
if __name__ == '__main__':
    main()