How do developers call proxy IPs?Python/Scrapy Code Example Explanation

First, why proxy IP can become the "umbrella" of data capture

When a developer visits a target website with a high frequency using a crawler program, the server identifies abnormal traffic by its IP address. Once the real IP is blocked, the whole business will be paralyzed. Useipipgo proxy ip serviceIt's like putting a cloak of invisibility on a reptile by90 million + residential IP poolsThe automatic rotation mechanism allows each request to display a different home network address, effectively avoiding the triggering of anti-crawl mechanisms.

Second, the basic version of Python: 5 lines of code to achieve the proxy call

For simple crawler scenarios, you can use the requests library to quickly access the proxy service. The following is an example of using the ipipgo dynamic proxy:

 import requests # API interface from the ipipgo console (example format) api_url = "https://api.ipipgo.com/getproxy?key=YOUR_API_KEY&type=dynamic" # Get proxy IP (supports the HTTP/HTTPS/SOCKS5 protocols) proxy = requests.get(api_url).json()['proxy'] proxies = {"http": f "http://{proxy}", "https": f "http://{proxy}"} response = requests.get("https://目标网站.com", proxies=proxies)

Here byFull Protocol Supportfeatures, developers do not need to care about proxy protocol differences. It is recommended to add an exception retry mechanism in the code, when encountering IP failure automatically from ipipgo'sDynamic IP PoolGet new address.

Third, Scrapy advanced program: intelligent agent middleware development

For distributed crawler frameworks, it is recommended to automate agent management through Middleware. Createproxymiddleware.pyDocumentation:

 import random from scrapy.downloadermiddlewares.retry import RetryMiddleware class IPIPGoProxyMiddleware(RetryMiddleware): def __init__( self, settings): self.proxy_api = settings.get('IPIPGO_API_URL') self.proxy_pool = [] # Proxy Pool Cache def _refresh_proxies(self): """Get the latest list of proxies from the IPIPGO interface."" proxy list""" response = requests.get(self.proxy_api) self.proxy_pool = response.json()['proxies'] def process_request(self, request, spider): if not self.proxy_pool: self._refresh_proxies() proxy = random.choice(self.proxy_pool) request.meta['proxy'] = f "http://{proxy}" request. headers['Proxy-Authorization'] = self._generate_auth(proxy) def _generate_auth(self, proxy): # Generate authentication headers based on key generated by ipipgo console token = base64. b64encode(f"{proxy['user']}:{proxy['pass']}".encode()) return f'Basic {token.decode()}'

Configure enable in settings.py:

 DOWNLOADER_MIDDLEWARES = { 'your_project.middlewares.IPIPGoProxyMiddleware': 543, } IPIPGO_API_URL = "https://api.ipipgo.com/enterprise_ api" # Enterprise Interface

IV. 4 tuning techniques that must be mastered

V. Developer FAQ QA

Q: How do I test if the proxy is working?
A: Add in the codeprint(response.json()['origin'])View the returned IP address, or visit thehttps://api.ipipgo.com/checkipValidation.

Q: What should I do if I encounter a 403 error?
A: This situation usually need: 1. clean up local cookies 2. replace the request header information 3. through the ipipgo console to switch the IP region.

Q: What if I need to call overseas IPs at the same time?
A: Add in the API request parameters&country=usReady to assign US residential IP, ipipgo support240+ countries and territoriesThe precise positioning of the

VI. Why choose professional agency services?

Professional service providers like ipipgo have three major advantages over self-built proxy servers:
1. Massive IP Resources: Automatic filtering of failed nodes, availability of 99.2% or more
2. Intelligent Routing System: Automatically matches the best route to the target site
3. Legal Compliance Assurance: All IPs are legally licensed by local carriers

With the combined solution of API docking + automation middleware, developers only need to focus on business logic, IP management and optimization can be left to ipipgo's professional system. Register now to also receiveFree Trial PackageExperience the efficiency gains that come with enterprise-class agency services.