これは私がこれまでに持っているコードです:

from grp import struct_group
from bs4 import BeautifulSoup   
import requests 
import pandas as pd   
import urllib.parse 

name = []
price = []
mileage = []
dealer_name =[]
source = []



for i in range (1,13):
        #Allow to Crawl multiple pages:
        website="https://www.cars.com/shopping/results/?page=" + str(i) + '&page_size=20&dealer_id=&keyword=&list_price_max=&list_price_min=&makes[]=&maximum_distance=all&mileage_max=&sort=best_match_desc&stock_type=used&year_max=&year_min=&zip=95355'
        #Requesting using requests lib 
        response = requests.get(website)

        soup = BeautifulSoup(response.content, 'html.parser')
        #Finding results 
        results = soup.find_all('div', {'class':'vehicle-card'})   
        url_combine = []
        root_url="http://www.cars.com"   
        url_combine = root_url , source
        
        
        for result in results:    
            # name
            try:
                name.append(result.find('h2').get_text()) 
            except:
                name.append('n/a')
            #price 
            try:
                price.append(result.find('span', {'class':'primary-price'}).get_text())
            except:
                price.append('n/a')
            
            # mileage
            try:
                mileage.append(result.find('div', {'class':'mileage'}).get_text())
            except:
                mileage.append('n/a')
            # dealer_name
            try:
                dealer_name.append(result.find('div', {'class':'dealer-name'}).get_text().strip())
            except:
                dealer_name.append('n/a')
            #link
            try:
                source.append(result.find('a', {'class':'vehicle-card-visited-tracking-link'}).get('href'))
            except:
                source.append('n/a')
        for link in source:
            url_combine.append(urllib.parse.urljoin(root_url, link))
            

#Using Pandas to create a dictionary and import to Excel
car_listings = pd.DataFrame({'Name': name, 'Mileage':mileage, 'Price': price, 'Dealer Name':dealer_name,'Link': source})
car_listings.to_excel('car_listings_page4.xlsx')

しかし、私はそれが言うところで問題に遭遇し続けます AttributeError: 'tuple' object has no attribute 'append'.

私はすべてを作る必要があることを知っています list の代わりに tuple しかし、自分の間違いがどこにあるかを見つけることができないようです。 これは完全なURLを取得する1つの方法だと思います href. もしそうなら、コードに実装できる他の方法はありますか?