[英]Combining multiple lines of output to a single line using BeautifulSoup findAll with multiple classes/tags
我正在嘗試構建一個從網頁收集文本的scraper。 我正在看兩個具有不同類名的特定div(“product-image”和“product-details”)。 我正在遍歷它們,從div中的每個“a”和“dd”標簽中抓取文本。
值得注意的是,這是我寫過的第一個Python程序......
這是我的代碼:
list_of_rows = []
for row in soup.findAll(True, {"class":["product-image", "product-details"]}):
list_of_cells = []
for cell in row.findAll(['a', 'dd']):
text = cell.text.replace(' ', '')
list_of_cells.append(text)
list_of_rows.append(list_of_cells)
當我打印出list_of_rows時,我在循環中為每個傳遞獲得以下輸出:
[價錢]
[標題],[作者],[發行],[等等],[等等],[等等]
[price]來自“product-image”div塊。 [標題]等。 來自“產品細節”div塊。
所以基本上,findAll和我寫的循環為每個div塊輸出不同的行,我正在循環。 我想得到的結果是兩個塊的單行輸出,如下所示:
[價格],[標題],[作者],[發行],[等等],[等等],[等等]
有沒有辦法在我當前的流程中執行此操作,或者我是否需要將其分解為多個循環,單獨提取數據,然后合並? 我已經瀏覽了StackOverflow和其他站點上的所有問答,雖然我可以找到具有多個類的findAll循環實例,但我找不到任何如何將輸出減少到單行的示例。
這是我正在解析的網頁的片段。 這個片段在我正在解析的html中出現1次x,其中x是頁面上的產品數量:
<div class="product-image">
<a class="thumb" href="/Store/Details/life-on-the-screen/_/R-9780684833484B"><img src="http://images.bookdepot.com/covers/large/isbn978068/9780684833484-l.jpg" alt="" class="cover" />
<div class="price "><span>$</span>2.25
</div>
</a>
</div>
<div class="product-details">
<dl>
<dt><div class="nowrap"><span><a href="/Store/Details/life-on-the-screen/_/R-9780684833484B" title="Life On The Screen">Life On The Screen</a></span></div></dt>
<dd class="type"><div class="nowrap"><span><a href="/Store/Browse/turkle-sherry/_/N-4294697489/Ne-4">Turkle, Sherry</a></span></div></dd>
<dd class="type"><div class="nowrap"><a href="/Store/Browse/simon-and-schuster/_/N-4294151338/Ne-5">Simon and Schuster</a></div></dd>
<dd class="type">(Paperback)</dd>
<dd class="type">Computers & Internet</dd>
<dd class="type">ISBN: 9780684833484</dd>
<dd>List $15.00 - Qty: 9</dd>
</dl>
</div>
任何指針或幫助非常感謝!
從你的問題,我想出了2個結果..我不確定你在找什么...所以我發布了兩個案例
第一種情況 - 擴展列表而不是附加它
from bs4 import BeautifulSoup
data = """<div class="product-image">
<a class="thumb" href="/Store/Details/life-on-the-screen/_/R-9780684833484B"><img src="http://images.bookdepot.com/covers/large/isbn978068/9780684833484-l.jpg" alt="" class="cover" />
<div class="price "><span>$</span>2.25
</div>
</a>
</div>
<div class="product-details">
<dl>
<dt><div class="nowrap"><span><a href="/Store/Details/life-on-the-screen/_/R-9780684833484B" title="Life On The Screen">Life On The Screen</a></span></div></dt>
<dd class="type"><div class="nowrap"><span><a href="/Store/Browse/turkle-sherry/_/N-4294697489/Ne-4">Turkle, Sherry</a></span></div></dd>
<dd class="type"><div class="nowrap"><a href="/Store/Browse/simon-and-schuster/_/N-4294151338/Ne-5">Simon and Schuster</a></div></dd>
<dd class="type">(Paperback)</dd>
<dd class="type">Computers & Internet</dd>
<dd class="type">ISBN: 9780684833484</dd>
<dd>List $15.00 - Qty: 9</dd>
</dl>
</div>"""
soup = BeautifulSoup(data,'lxml')
list_of_rows = []
for row in soup.findAll(True, {"class":["product-image", "product-details"]}):
list_of_cells = []
for cell in row.findAll(['a', 'dd']):
text = cell.text.replace(' ', '')
list_of_cells.append(text)
list_of_rows.extend(list_of_cells)
print list_of_rows
產量
[u'\n$2.25\n \n', u'Life On The Screen', u'Turkle, Sherry', u'Turkle, Sherry', u'Simon and Schuster', u'Simon and Schuster', u'(Paperback)', u'Computers & Internet', u'ISBN: 9780684833484', u'List $15.00 - Qty: 9']
第二種情況 - 您需要從html文本中刪除新行字符
list_of_rows = []
for row in soup.findAll(True, {"class":["product-image", "product-details"]}):
list_of_cells = []
for cell in row.findAll(['a', 'dd']):
text = cell.text.replace(' ', '')
list_of_cells.append(text.strip())
list_of_rows.append(list_of_cells)
print list_of_rows
產量
[[u'$2.25'], [u'Life On The Screen', u'Turkle, Sherry', u'Turkle, Sherry', u'Simon and Schuster', u'Simon and Schuster', u'(Paperback)', u'Computers & Internet', u'ISBN: 9780684833484', u'List $15.00 - Qty: 9']]
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