我正在嘗試從電子商務網站上抓取一些數據用于個人項目。我正在嘗試從 html 構建一個嵌套的字符串列表，但 html 的一部分出現問題。每個列表項如下所示：<div class="impressions" data-impressions=\'{"id":"01920","name":"Sleepy","price":12.95,"brand":"Lush","category":"Bubble Bar","variant":"7 oz.","quantity":1,"list":"/bath/bubble-bars/sleepy/9999901920.html","dimension11":"","dimension12":"Naked,Self Preserving,Vegan","dimension13":1,"dimension14":1,"dimension15":true}\'></div>我現在擁有的是一個正則表達式，它可以將 data-impressions 標簽中的所有項目像這樣轉換并在逗號處分割它們：list_return = [re.findall('\{([^{]+[^}\'></div>])', i) for i in bathshower_impressions]list_return = [re.split(',', list_return[i][0]) for i in range(0, len(list_return))]這為我提供了每個事物的列表列表，這些列表將成為字典中的鍵：值對。對于上面的示例，第二級項目如下：[['"id"', '"01920"'], ['"name"', '"Sleepy"'], ['"price"', '12.95'], ['"brand"', '"Lush"'], ['"category"', '"Bubble Bar"'], ['"variant"', '"7 oz."'], ['"quantity"', '1'], ['"list"', '"/bath/bubble-bars/sleepy/9999901920.html"'], ['"dimension11"', '""'], ['"dimension12"', '"Naked'], ['Self Preserving'], ['Vegan"'], ['"dimension13"', '1'], ['"dimension14"', '1'], ['"dimension15"', 'true']]我的問題是維度 12，我不知道如何排除該維度以逗號分隔，以便該列表顯示為：['"dimension12"', '"Naked,Self Preserving,Vegan"']如有任何幫助，我們將不勝感激，謝謝。
1 回答
繁花如伊
TA貢獻2012條經驗 獲得超12個贊
我想建議一種不同的方法。該屬性值看起來像JSON，那么為什么不使用json模塊呢？這樣，您就有了一個現成的數據結構，可以進一步修改。
import json
from bs4 import BeautifulSoup
html_list = [
"""<div class="impressions" data-impressions=\'{"id":"01920","name":"Sleepy","price":12.95,"brand":"Lush","category":"Bubble Bar","variant":"7 oz.","quantity":1,"list":"/bath/bubble-bars/sleepy/9999901920.html","dimension11":"","dimension12":"Naked,Self Preserving,Vegan","dimension13":1,"dimension14":1,"dimension15":true}\'></div>""",
]
data_structures = []
for html_item in html_list:
soup = BeautifulSoup(html_item, "html.parser").find("div", {"class": "impressions"})
data_structures.append(json.loads(soup["data-impressions"]))
print(data_structures)
這會輸出一個字典列表：
[{'id': '01920', 'name': 'Sleepy', 'price': 12.95, 'brand': 'Lush', 'category': 'Bubble Bar', 'variant': '7 oz.', 'quantity': 1, 'list': '/bath/bubble-bars/sleepy/9999901920.html', 'dimension11': '', 'dimension12': 'Naked,Self Preserving,Vegan', 'dimension13': 1, 'dimension14': 1, 'dimension15': True}]
要訪問所需的密鑰，只需執行以下操作：
for data_item in data_structures:
print(data_item["dimension12"])
印刷：Naked,Self Preserving,Vegan
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