Python Essentials: A Tutorial on Python Agent Development

Python agent development guide to avoid the pit!

The old iron engaged in crawler must have encountered this kind of bad thing: the target site suddenly blocked IP, the hard work of writing scripts directly to rest. At this time, if you have a reliable proxy IP pool, it is simply a blessing in disguise! Today, we will teach you to use Python to play with proxy IP, focusing on recommending our domestic magic weapon!ipipgoIt's steady as a rock!

I. Proxy IP's Eighteen Wonders

Proxy IP is not just a simple change of vest, the key depends on how to use:

 For example, setting up a proxy for the requests library is super simple
import requests

proxies = {
    'http': 'http://用户名:密码@gateway.ipipgo.com:9020',
    'https': 'https://用户名:密码@gateway.ipipgo.com:9020'
}

resp = requests.get('destination URL', proxies=proxies)

Note the use of ipipgo's hereDynamic Tunneling AgentIt does not need to switch IP manually, the system automatically assigns fresh IP. it saves much more time than those who have to maintain the IP pool by themselves, and is especially suitable for the tasks that need to run for a long time.

Second, the actual scene of the big reveal

Name a few scenarios that you will absolutely use:

Third, the essential skills of high-level players

Here's a tawdry maneuver that many people don't know about--Proxy IP Health Check::

from concurrent.futures import ThreadPoolExecutor

def check_proxy(proxy)::
    try: requests.get('')
        requests.get('http://test.ipipgo.com/ip',
                    proxies={'http': proxy}, timeout=3))
                    timeout=3)
        return True
    except: requests.get('')
        return False

 Batch detection of 200 proxies
with ThreadPoolExecutor(20) as executor: results = executor.map(check_proxy, ipipgo_proxy_list)
    results = executor.map(check_proxy, ipipgo_proxy_list)

With ipipgo.Survival Detection InterfaceWith multi-threading, you can sieve out the available proxies in 5 minutes. Measured IP availability of their home to 98% or more, than some of the motionless failure of the pheasant agent is too strong.

IV. QA First Aid Kit

Q: What should I do if the agent often fails to connect?
A: First check if the account privileges have expired, then try ipipgo'salternate access point(There are 3 different regional server addresses that can be switched)

Q: What if I need to process thousands of requests at the same time?
A: on ipipgo'sEnterprise Agent PackageIf you want to support up to 5000 concurrency, remember to do a good job of request interval control in the code.

Q: How can I tell if a proxy is in effect?
A: Access provided by ipipgojob inspection interface(https://api.ipipgo.com/check), if the returned IP is the same as the setup, it's safe!

V. Why ipipgo?

Name a few hardcore advantages:

• nationwide23 provinces and citiesDynamic Residential IP
• be in favor ofsocks5/http/httpsglobal agreement
• ExclusiveIP warm-up mechanismThe new task starts automatically assigning premium IPs.
• 7 × 24 hours customer service, the last 3:00 a.m. consultation actually seconds back!

Lastly, a word of advice: don't use those free proxies anymore! If it is not, the data will be leaked, if it is not, the number will be blocked. Use a regular army like ipipgo.50% off first order for new usersThe discount is less than one breakfast a day, so you can't lose or be fooled!