Python - 如何将多行写入文件？ 列表，不是字符串

如何解决Python - 如何将多行写入文件？ 列表，不是字符串

当我将它们写入文件时，我终生无法弄清楚如何获取此列表的元素（列表本身）以多行打印。我从网站上抓取标题，然后抓取链接。最终目标（为了您的见解）是以如下格式配对标题和链接：

<a href='www.mywebsite.com/curry-recipe'>Curry Recipe<a/> 

但就目前而言，问题是虽然我最终使 desfinalList 看起来不错，例如：

[['Curry Recipe','www.originalwebsite.com/curry-recipe'],['Pancake Recipe','www.originalwebsite.com/pancake-recipe']]

我似乎无法将它打印到文件中，除非它全部排成一行。使用文本换行，它可以明显地进行管理，但我更喜欢它在多行上。

有问题的代码是最后一个块。

def OFDdesserts():

    urlA = 'https://olivesfordinner.com/category/dessert/page/{}'

    for i in range(2,5): 
        url = urlA.format(i)
    
        response = requests.get(url)
        htmlText = response.text
    
        soup = BeautifulSoup(htmlText,'lxml')
        links = soup.find_all('article')

        for title in links[0:12]:
            titleActual = title.get('aria-label')
            if 'Giveaway' not in titleActual:
                hyperL = title.find('header',class_ = 'entry-header').a['href']
                if titleActual not in desTitleList:
                    desTitleList.append(titleActual)
                    desLinkList.append(hyperL)


    desList3.append([[x,y] for x,y in zip(desTitleList,desLinkList)])

    #erase duplicates
    for item in desList3:
        if item not in desfinalList:
            desfinalList.append(item) 

    #write the file
    for elem in desfinalList:
        with open('recipes/desserts.txt','w') as f:
            f.write('\n \n'.join(map(str,desfinalList)))
            print('just added something yummy to desserts!')

解决方法

最好使用 .select() 方法，它像 jQuery 或 CSS 一样选择器并使用 str() 来获取链接为 html <a href="....">anchor</a>。

def OFDdesserts():
    urlA = 'https://...../page/{}'
    linkTags = []

    for i in range(2,5): 
        url = urlA.format(i)
        response = requests.get(url)
        soup = BeautifulSoup(response.text,'html.parser')
        links = soup.select('.content article h2 a')

        for link in links:
            if 'Giveaway' in link.text:
                continue
            # clean tag (i) from anchor text
            link.extract()
            # clean link attributes
            link.attrs = {'href': link.attrs['href']}
            linkStr = str(link)
            if linkStr not in linkTags:
                linkTags.append(linkStr)

    #write the file
    with open('desserts.txt','w') as f:
        f.write('\n\n'.join(linkTags))
        print('just added something yummy to desserts!')