Python中的Scraper提供了“访问被拒绝"提示，

问题描述

我正在尝试使用Python编写一个scraper，以从页面中获取一些信息.就像此页面上显示的优惠标题一样:
https://www.justdial.com/Panipat/Saree-Retailers/nct-10420585

I'm trying to code a scraper in Python to get some info from a page. Like the title of the offers that appear on this page:
https://www.justdial.com/Panipat/Saree-Retailers/nct-10420585

现在我使用以下代码:

import bs4
import requests

def extract_source(url):
    source=requests.get(url).text
    return source

def extract_data(source):
    soup=bs4.BeautifulSoup(source)
    names=soup.findAll('title')
    for i in names:
        print i

extract_data(extract_source('https://www.justdial.com/Panipat/Saree-Retailers/nct-10420585'))

但是当我执行这段代码时，它给了我一个错误:

But when I execute this code, it gives me an error:

<titlee> Access Denied</titlee>

该怎么办?

推荐答案

如注释中所述，您需要指定允许的用户代理并将其作为headers传递:

As was mentioned in comments, you need to specify allowable user-agent and pass it as headers:

def extract_source(url):
    headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:50.0) Gecko/20100101 Firefox/50.0'}
    source=requests.get(url, headers=headers).text
    return source

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