Python invalid syntax meaning: Python syntax error analysis

First, Python newbie for why always be small red fork storm?

When I first learned Python, I looked at a screen full ofred wavy lineIt's like seeing a ghost. The most common is a missed colon, such as a slip of the hand when writing an if statement:

if x > 5 The colon is missing here!
    print("Overrun")

This mistake is more likely to be made when the requests library is paired with a proxy, especially when dealing with ipipgo's API interface. Some bros will write the proxy parameter like this:

proxies = { 'http': 'http://ipipgo.com:8000' } correct
proxies = 'http://ipipgo.com:8000' misses the protocol header dictionary structure

II. Typical rollover scene in a proxy IP scenario

When using the requests library with proxies, newbies often fall into these potholes:

III. Hands-on! The right posture with ipipgo proxy

Assuming that a dynamic residential proxy with ipipgo is going to be used to grab the data, the complete process should look like this:

import requests

def get_proxy().
     Get the dynamic proxy from ipipgo (switch to the real API here)
    return {
        'http': 'http://用户:密码@gateway.ipipgo.com:9020',
        'https': 'https://用户:密码@gateway.ipipgo.com:9020'
    }

try.
    resp = requests.get('destination URL', proxies=get_proxy(), timeout=10)
except SyntaxError as e.
    print("There is a syntax problem! Check for colons or parentheses:", e)
except Exception as e.
    print("Network problem suggest changing ipipgo new IP:", e)

IV. QA time for veteran drivers

Q：Why do I still get an error when the proxy format is correct?
A: pay attention to three points: 1) user name password contains special characters to URL code 2) confirm whether the proxy package supports the current protocol 3) check ipipgo background of the remaining traffic

Q: How can I avoid syntax errors when programming asynchronously?
A: Remember async/await pairing when using aiohttp, and proxy settings should be placed in ClientSession:

async with aiohttp.ClientSession(
    connector=aiohttp.TCPConnector(ssl=False),
    proxy="http://ipipgo.com:端口"
) as session.
     Business Code

Q: Why do you recommend ipipgo?
A: They have three axes: 1) the national dynamic residential IP pool 2) automatic authentication without manual extraction 3) to provide a complete code sample document, the novice special friendly!

V. The Ultimate Guide to Avoiding the Pit

Remember this.The Universal Misplaced Set::
1. Print out the proxy address separately to check
2. First test the syntax with a fixed IP (e.g. the test proxy provided by ipipgo)
3. Step-by-step addition of code segments to the try block
4. Static checking with pylint or flake8

One last piece of cold knowledge: with ipipgo'spay-per-use packageDoing debugging is the most cost-effective because the syntax error stage doesn't require a lot of IP, and then switching the monthly subscription when the code stabilizes is the way to play for the true-veteran driver.