Python - 如何獲取所有實例而不僅僅是頁面上的第一個

Question

使用findAll會給出錯誤「TypeError：list indices must be integers，not str」，其中使用.find沒有。使用findall會給出錯誤「TypeError：'NoneType'對象不可調用」。

什麼是正確的方式來定位頁面上有一類「框架」的所有鏈接，而不是隻是第一個實例？

import requests 
from bs4 import BeautifulSoup 

url = ("http://www.gym-directory.com/listing-category/gyms-fitness-centres/") 
r = requests.get(url) 
soup = BeautifulSoup(r.text, 'html.parser') 
print soup.findAll("a",{"class":"frame"})["href"] 

url = ("http://www.gym-directory.com/listing-category/gyms-fitness-centres/page/2/") 
r = requests.get(url) 
soup = BeautifulSoup(r.text, 'html.parser') 
print soup.findAll("a",{"class":"frame"})["href"] 

url = ("http://www.gym-directory.com/listing-category/gyms-fitness-centres/page/3/") 
r = requests.get(url) 
soup = BeautifulSoup(r.text, 'html.parser') 
print soup.findAll("a",{"class":"frame"})["href"] 

url = ("http://www.gym-directory.com/listing-category/gyms-fitness-centres/page/4/") 
r = requests.get(url) 
soup = BeautifulSoup(r.text, 'html.parser') 
print soup.findAll("a",{"class":"frame"})["href"] 

url = ("http://www.gym-directory.com/listing-category/gyms-fitness-centres/page/5/") 
r = requests.get(url) 
soup = BeautifulSoup(r.text, 'html.parser') 
print soup.findAll("a",{"class":"frame"})["href"] 

url = ("http://www.gym-directory.com/listing-category/gyms-fitness-centres/page/6/") 
r = requests.get(url) 
soup = BeautifulSoup(r.text, 'html.parser') 
print soup.findAll("a",{"class":"frame"})["href"] 

url = ("http://www.gym-directory.com/listing-category/gyms-fitness-centres/page/7/") 
r = requests.get(url) 
soup = BeautifulSoup(r.text, 'html.parser') 
print soup.findAll("a",{"class":"frame"})["href"] 

url = ("http://www.gym-directory.com/listing-category/gyms-fitness-centres/page/8/") 
r = requests.get(url) 
soup = BeautifulSoup(r.text, 'html.parser') 
print soup.findAll("a",{"class":"frame"})["href"] 

url = ("http://www.gym-directory.com/listing-category/gyms-fitness-centres/page/9/") 
r = requests.get(url) 
soup = BeautifulSoup(r.text, 'html.parser') 
print soup.findAll("a",{"class":"frame"})["href"] 

Answer 1

的問題是，soup.findAll()返回list，並且您試圖訪問與["href"]

該列表中，你需要做的是：

for elem in soup.findAll("a", {"class": "frame"}): 
    print elem["href"]