爬虫入门小白，求debug

Question

import requests

list=[]
for i in range(3):
    #问题出在下面这个URL,给固定第1页可以爬去，想让他自动爬3页练习一下，求大神指点 ，谢谢
    url="""'https://bj.lianjia.com/zufang/chaoyang/pg'+str(i+1)+'/#contentList'"""
    res = requests.get(url,headers = headers)
    soup = BeautifulSoup(res.text,'lxml')
    allprice = soup.find_all('div',class_='content__list--item--main')
    list = []
    for j in allprice:
        tag_a = j.find('em')
        price =tag_a.text
        tag_b = j.find('p',class_='content__list--item--title')
        title = tag_b.text
        list.append(price)
print(list)

Answer 1

url拼接错误

把"""'https://bj.lianjia.com/zufang/chaoyang/pg'+str(i+1)+'/#contentList'"""

替换成

"""'https://bj.lianjia.com/zufang/chaoyang/pg{}/#contentList'""".format(i)