Using beautifulsoup to parse string efficiently

问题

I am trying to parse this html to get the item title (e.g. Big Boss Air Fryer - Healthy 1300-Watt Super Sized 16-Quart, Fryer 5 Colors -NEW)

<div style="" class="">
    <h1 class="it-ttl" itemprop="name" id="itemTitle"><span class="g-hdn">Details about  &nbsp;</span>Big Boss Air Fryer - Healthy 1300-Watt Super Sized 16-Quart, Fryer 5 Colors -NEW</h1>
            <h2 id="subTitle" class="it-sttl">
            Brand New + Free Shipping, Satisfaction Guaranteed! </h2>
    <!-- DO NOT change linkToTagId="rwid" as the catalog response has this ID set  -->
    <div class="vi-hdops-three-clmn-fix">           
        <div style="" class="vi-notify-new-bg-wrapper">
                <div class="vi-notify-new-bg-dTop" style=""> </div>
                <div id="vi_notification_new" class="vi-notify-new-bg-dBtm" style="top: -28px;"> 
                    <img src="https://ir.ebaystatic.com/rs/v/tnj4p1myre1mpff12w4j1llndmc.png" width="11" height="12" class="vi-notify-new-img" alt="Popular">
                    <span style="font-weight:bold;">5 sold in last 24 hours</span>
                </div>
            </div>
        </div>      
    </div>

I am using the following code to parse the page

url1 = "https://www.ebay.com/itm/Big-Boss-Air-Fryer-Healthy-1300-Watt-Super-Sized-16-Quart-Fryer-5-Colors-NEW/122454150244?    epid=2254405949&hash=item1c82d60c64:m:mqfT2XbgveSevmN5MV1iysg"

def get_single_item_data(item_url):
    source_code = requests.get(item_url)
    plain_text = source_code.text
    soup = BeautifulSoup(plain_text)

    for item in soup.findAll('h1', {'class':'it-ttl'}):
        print(item.string) # Use item.text

get_single_item_data(url1)

When I do this, beautifulsoup return 'None'.

One solution I found is to use print(item.text) instead, but now I get this 'Details about Big Boss Air Fryer - Healthy 1300-Watt Super Sized 16-Quart, Fryer 5 Colors -NEW'(I do not want 'Details about ').

Is there an efficient way to get the item title without having to get the text and then taking off the 'Details about '?

回答1:

This is because of this caveat of the .string attribute:

If a tag contains more than one thing, then it’s not clear what .string should refer to, so .string is defined to be None

Since the header element contains multiple children - it cannot be defined and defaults to None.

To avoid cutting of "Details about" part, you can get the first text node in a non-recursive mode:

soup.find('h1', {'class':'it-ttl'}).find(text=True, recursive=False)

Demo:

In [3]: soup = BeautifulSoup(data, "html.parser")

In [4]: print(soup.find('h1', {'class':'it-ttl'}).find(text=True, recursive=False))
Big Boss Air Fryer - Healthy 1300-Watt Super Sized 16-Quart, Fryer 5 Colors -NEW

回答2:

You [sh/co]uld use .text instead .string :

from bs4 import BeautifulSoup
import requests


url1 = "https://www.ebay.com/itm/Big-Boss-Air-Fryer-Healthy-1300-Watt-Super-Sized-16-Quart-Fryer-5-Colors-NEW/122454150244?    epid=2254405949&hash=item1c82d60c64:m:mqfT2XbgveSevmN5MV1iysg"

def get_single_item_data(item_url):
    source_code = requests.get(item_url)
    plain_text = source_code.text
    soup = BeautifulSoup(plain_text,'html.parser')



    for item in soup.findAll('h1', {'class':'it-ttl'}):
        print(item.text) # Use item.text

get_single_item_data(url1)

output:

Details about   Big Boss Air Fryer - Healthy 1300-Watt Super Sized 16-Quart, Fryer 5 Colors -NEW

来源：https://stackoverflow.com/questions/48079366/using-beautifulsoup-to-parse-string-efficiently

标签

python

beautifulsoup

html-parsing