Python Reading JSON: File Parsing and API Response Handling

What does JSON have to do with proxy IPs?

Many partners may see this title for the first time will be confused, JSON is not used to store data? With the proxy IP eight poles do not play ah. Don't panic, listen to me to cite a real scene you understand.

Recently, a friend who does data crawling complained to me that when he used Python to request a certain website API, obviously the code was fine, but he always failed to get the data. Later, he realized that the other server wouldLimit access frequency based on IP address. This is where a proxy IP is needed toRotate between different IPsThe proxy IP configuration information is usually in the JSON file.

Hands-On Reading of Local Proxy Pools

Assuming you bought the proxy service from ipipgo, the downloaded configuration file looks like this:

{
  "proxy_list": [
    { "ip": "123.45.67.89", "port": 8080, "type": "http"}, { "ip": "98.76.54.32", "port": 3128, "type": "https"}, }
    {"ip": "98.76.54.32", "port": 3128, "type": "https"}
  ]
}

Three things to note when reading with Python:

1. Don't misspell the path (newbies often fall foul of it)
2. expense or outlaywith openPreventing Document Occupancy
3. Exception handling should be in place

Real-world code:

import json

try.
    with open('ipipgo_proxies.json', 'r') as f.
        proxy_data = json.load(f)
        print(f "Successfully loaded {len(proxy_data['proxy_list'])} proxy IPs.")
except FileNotFoundError: print("The IP address of the proxy_list").
    print("Dude, check the file path!")
except json.JSONDecodeError: print("Dude, check the file path!")
    JSONDecodeError: print("Configuration file is broken, download it again.")

API Response Processing Pitfall Avoidance Guide

When dealing with dynamic API responses, many people will ignore theresponse header validationThe following is a recent case of a trainee. Recently, there was a case of a student: when he used requests to get proxy IP, the code seemed to be normal but always reported an error. In the end, it was found that theForgot to pass authentication parameters, what the server returns is actually an HTML error page, not JSON data at all.

Proxy IP Practical Tips

In conjunction with ipipgo's services, this jack-of-all-trades configuration template is recommended:

import requests

proxies = {
    "http": "http://user:password@123.45.67.89:8080",
    "https": "http://user:password@98.76.54.32:3128"
}

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

Note the replacement of these places:

• user:password → your ipipgo account password
• IPs and ports → latest proxies acquired by the console
• Timeout time recommendation ≤ 10 seconds

Frequently Asked Questions QA

Q: Why is it slower when I use a proxy instead?
A: It may be the wrong type of line, do data collection with static residential agent, grab the ticket to snatch the purchase with the machine room agent. ipipgo's customer service can help diagnosis

Q：What should I do if there is Chinese garbage in JSON?
A: Add encoding parameter when you open the file:
open('data.json', 'r', encoding='utf-8')

Q: Proxy IPs suddenly all fail?
A: First check if the account is expired, then contact ipipgo technical support. Their IP survival rate is one of the best in the industry, and I've basically never had a problem with it in my program!

Why ipipgo?

Honestly, there are so many agency service providers in the market, but it is possible to doThree-second response to work orders,7×24 hours technical supportThere are not many of them. Last week I help customers do crawler project, 2:00 in the morning encountered proxy authorization problems, ipipgo engineers actually seconds back to the message, the service is really no words.

theirDynamic IP pool updated daily 20%The program is based on a random selection algorithm in Python, which is a perfect solution to the anti-climbing mechanism. Secretly tell you a trick: new users register to receive a 3-day trial, enough to test the feasibility of the project.