Proxy IP Parsing JSON Data: Efficient JSON Parsing with Proxy IP

Proxy IP and JSON data? We'll have to start at the beginning.

Old iron may wonder, proxy IP is not just change IP address? What is the relationship with parsing JSON data? Let's take a chestnut: just like your online shopping to receive the courier, JSON data is the parcel bill number, the proxy IP is the courier boy. If the courier station pulls you black (IP blocked), and then the important parcels can not be received.

Now many websites are like hedgehogs, see frequent requests to zap people. For example, the crawler program to bulk access to commodity prices, with a fixed IP to grab the data, a minute by the site ban. At this time it is necessary toProxy IP to be a stand-in actor, making the site think it is being accessed by different users.

Hands-on teaching you to use proxy IP to jerk JSON data

Here is a chestnut in Python, suppose we want to grab product information from a website. First install the requests library, and then focus on the proxy settings section:

import requests

proxies = {
    'http': 'http://username:password@gateway.ipipgo.com:9020',
    'https': 'http://username:password@gateway.ipipgo.com:9020'
}

response = requests.get(
    'https://api.example.com/products',
    proxies=proxies,
    timeout=10
)

 Parsing JSON data is like unpacking a courier
data = response.json()
print(data['price'])

watch carefullyusername and passwordYou have to change the authentication information you got in the background of ipipgo. ipipgo's proxy address is a fixed format, don't blindly change the port number by yourself, and use the exclusive channel provided by them to be stable.

Avoiding Three Giant Pits! Lessons Learned from Blood and Tears

Why do we recommend ipipgo, test and compare?

There are many agents on the market, but the old drivers who have used them know that many of the agents labeled "high stash" are actually transparent agents. Previously tested a certain home, just sent 20 requests to be recognized. Change to ipipgoBusiness Level Agent PackageAfter that, the script ran for two days straight without flipping.

They have a couple of killers:

• Native IP in 200+ cities across the country, authenticity pulled full circle
• Automatic authentication system without frequent configuration changes
• Exclusive bandwidth, no crowding.

A must-see QA session for the little guy

Q: Will proxy IPs slow down data acquisition?
A：这得看供应商质量。像ipipgo的BGP线路，实测在80ms左右，比自家宽带还快。别贪便宜买野鸡代理，那才真卡成PPT。

Q: How do I verify if the agent is in effect?
A: You can visit http://ip.ipipgo.com/checkip first to see if the returned IP is a proxy IP. This is ipipgo's own detection interface, which is much more accurate than third-party websites.

Q：What should I do if I often report errors when parsing JSON?
A: First print response.text to see the original data, may be the site returned an error page. It is recommended to use try-except to wrap the parsing code, and automatically retry if there is an error.

Say something from the heart.

Engage in data crawling is like a guerrilla war, the site defense is getting tighter and tighter. Recently, I've been helping clients with price comparison systems, and it's all about ipipgo'sDynamic Residential AgentsProps. Their IP pool is automatically updated daily, and with the request frequency control, it hasn't rolled over in over six months.

Finally, a piece of advice: do not believe those who claim that "permanent free" proxy service, either phishing traps, or IP has been pulled by the site black. Professional things or to ipipgo this kind of regular army, save time to spend more time with the family is not fragrant?