Python 3.x 您好，我正在制作一个web抓取python脚本来迭代整个HTML。现在只需要第一个

我正试图从网站上截取我的学校菜单

我很难让它遍历下面的嵌套if语句。现在它只接受第一个标题、cal和info，但不会遍历HTML的其余部分。有人知道如何让if语句不断迭代吗

以下是我的python代码：

import requests
from bs4 import BeautifulSoup


url = "https://uc.campusdish.com/en/LocationsAndMenus/CenterCourt"

page = requests.get(url)
soup = BeautifulSoup(page.content, 'html5lib')

table = soup.find_all('div', class_='menu__details')

titles = []
cals = []
infos =[]
#finds title, cals, and description in "Home Plates"
for item in table:
    if item.find_all('span', class_='item__name') is not None:    
        title = item.a.text
        titles.append(title)

        cal = item.find_all('span', class_='item__calories').text 
        cals.append(cal)

        info = item.find_all('p', class_='item__content').text
        infos.append(info)
print(titles)
print(infos)
print(cals)

导入请求
从bs4导入BeautifulSoup
从prettytable导入prettytable
table=PrettyTable（）
table.field_Name=['Name'，'carries'，'Content']
def主（url）：
r=请求。获取（url）
soup=BeautifulSoup（r.content'html.parser'）
target=soup.findAll（“li”，id=True，class=“menu\u item”）
对于目标中的焦油：
尝试：
表.添加行（[tar.a.text，tar.select\u one（“span.item\u carries”）。文本，
tar.选择一个（“p.item\u content”）.text]）
除属性错误外：
通过
打印（表格）
主要（”https://uc.campusdish.com/en/LocationsAndMenus/CenterCourt")

---

当我运行这段代码时，我得到一个错误状态：文件“main.py”，第21行cal=item.find_all（'span'，class='item___卡路里'）。文本回溯（最后一次调用）：文件“main.py”，第21行，在cal=item.find_all（'span'，class='item___卡路里'）。文本文件“/opt/virtualenvs/python3/lib/python3.8/site packages/bs4/element.py”，第2160行，在getattr raise AttributeError中（AttributeError:ResultSet对象没有属性“text”。您可能将元素列表视为单个元素。当您打算调用find（）时是否调用了find_all（）？是否没有收到该错误？find_all返回一个项目数组。您可以使用索引指定项目，例如item.find_all（'span'，class='item'uuuuu carries'）[0]。text或（更好的解决方案）是使用find返回1个项目，例如：item.find（'span'，class='item'uuuu carries'）。text

+------------------------------------------+--------------+-----------------------------------------------------------------------------------------------------------------------------+
|                   Name                   |   Calories   |                                                           Content                                                           |        
+------------------------------------------+--------------+-----------------------------------------------------------------------------------------------------------------------------+        
|        Grilled Lemon-Herb Pollock        | 190 Calories |                                   Grilled Pollock seasoned with lemon, garlic and oregano                                   |        
|        Herb Roasted Red Potatoes         | 100 Calories |                           Roasted quartered red potatoes tossed with rosemary, thyme and marjoram                           |        
|         Broccoli & Kale Stir-Fry         | 60 Calories  |                             Stir-fried kale, broccoli and garlic tossed with soy sauce and honey                            |        
|            White Dinner Roll             | 110 Calories |                                                    Soft white dinner roll                                                   |        
|               Apple Betty                | 200 Calories |                                  Warm apples with a crispy brown sugar-cinnamon crumb crust                                 |        
|           Chicken Caesar Salad           | 330 Calories |                          Grilled chicken, Parmesan and seasoned croutons on a bed of crisp romaine                          |        
|               Garden Salad               | 140 Calories |                            Egg, tomato, cucumber, carrot and bell pepper on a bed of mixed greens                           |        
|               Greek Salad                | 210 Calories |                          Tomato, feta, cucumber, banana peppers, Kalamata olives, onion and romaine                         |        
|               Garden Salad               | 15 Calories  |                            Fresh iceberg, romaine, cucumber, plum tomato, carrot and bell pepper                            |        
|          Chocolate Chip Cookie           | 120 Calories |                                  Freshly baked chewy cookie with semisweet chocolate chips                                  |        
| Gardenburger(R) Black Bean Veggie Burger | 270 Calories | Hearty black bean burger made with brown rice, onions, corn, red bell peppers, chilies and a hint of garlic on a white roll |        
|           Margherita Sandwich            | 420 Calories |               Fresh tomato, mozzarella topped with pesto sauce & parmesan crisps on toasted whole wheat bread               |        
|           Baked Russet Potato            | 140 Calories |                                                  Oven-roasted russet potato                                                 |        
|           Crispy French Fries            | 150 Calories |                                                Piping hot crispy French fries                                               |        
|               Sugar Cookie               | 120 Calories |                                               Freshly baked soft sugar cookie                                               |        
|            Cavatappi Alfredo             | 350 Calories |                                        Cavatappi pasta tossed in creamy Alfredo sauce                                       |        
|               Tossed Salad               | 30 Calories  |                  Crisp romaine lettuce tossed with fresh cucumber, carrot, onion and light Italian dressing                 |        
|            Vegan Mac & Cheese            | 470 Calories |                       Elbow macaroni baked with creamy Daiya(R) cheddar cheese sauce and bread crumbs                       |        
|           Zucchini & Tomatoes            | 40 Calories  |                                             Fresh zucchini with stewed tomatoes                                             |        
|         Vegan Peach-Banana Cake          | 310 Calories |                        Vegan blueberry banana cake topped with sweetened peaches and whipped topping                        |        
|         Chipotle Turkey Sandwich         | 530 Calories |                                Turkey, Monterey Jack, lettuce, tomato, onion & chipotle mayo                                |        
|      Turkey, Ham & Swiss Croissant       | 220 Calories |                      Turkey, ham, Swiss cheese, lettuce, tomato and honey mustard on a flaky croissant                      |        
|               Italian Sub                | 570 Calories |                          Ham, salami, provolone, banana peppers, lettuce and tomato with olive oil                          |        
|     Grilled Vegetable & Hummus Wrap      | 190 Calories |                   Grilled eggplant and zucchini, hummus, tomatoes, arugula and onion wrapped in a tortilla                  |        
|          Tandoori Chicken Wrap           | 340 Calories |             Tandoori-spiced chicken, pickled carrot and radish, cucumber and lettuce with curry yogurt dressing             |        
|             Signature Chips              | 140 Calories |                               Crispy potato chips seasoned with a blend of peppers and garlic                               |        
|           Oreo(R) Thimble Cake           | 110 Calories |                      Moist devil's food cake with Oreo cookie pieces topped with an Oreo yogurt mousse                      |        
|      Chicken & Rice Soup Florentine      | 80 Calories  |                     Chicken, rice, spinach, carrot, celery and onion simmered in a hearty chicken broth                     |        
|           Roasted Corn Chowder           | 150 Calories |             Roasted corn, diced potatoes and onions in a creamy rich soup spiced with herbs and hot pepper sauce            |        
|             Potato Leek Soup             | 130 Calories |                    Velvety puree of potatoes, leeks, onions, celery and herbs simmered in vegetable broth                   |        
|       BBQ Pineapple-Ham Flatbread        | 480 Calories |                            Ham, grilled pineapple and onions, Cheddar, pepper jack and BBQ sauce                            |        
|           Classic Cheese Pizza           | 270 Calories |                                              Mozzarella cheese and pizza sauce                                              |        
|             Pepperoni Pizza              | 300 Calories |                                            Pepperoni, mozzarella and pizza sauce                                            |        
|          Chocolate Chip Cupcake          | 210 Calories |                   Freshly baked yellow cake topped with creamy vanilla icing and semisweet chocolate chips                  |        
|          Chocolate Chip Cookie           | 120 Calories |                                  Freshly baked chewy cookie with semisweet chocolate chips                                  |        
|          Apple Stuffed Pancakes          | 240 Calories |                 Pancakes rolled and filled with apple compote and topped with cinnamon honey yogurt drizzle                 |        
|         Hash Brown Potato Patty          | 150 Calories |                                              Crispy fried shredded potato patty                                             |        
|          Chocolate Chip Cookie           | 120 Calories |                                  Freshly baked chewy cookie with semisweet chocolate chips                                  |        
|              Belgian Waffle              | 260 Calories |                                                 Crispy, golden-brown waffle                                                 |        
+------------------------------------------+--------------+-----------------------------------------------------------------------------------------------------------------------------+