raise HTTPError

Introduction

In Python, the urllib.error.HTTPError exception is raised when an HTTP request returns a non-2xx status code. This exception provides information about the error, including the status code, message, headers, and more.

Error Details

• Error: HTTPError
• Message: "HTTP 错误 503: 服务不可用"
• Code: 503 (Service Unavailable)

Error Explanation

The HTTP error with status code 503 indicates that the server is currently unable to handle the request due to overload or maintenance. The service is temporarily unavailable, and the client should retry the request at a later time.

Code Example

import urllib.request
from urllib.error import HTTPError

try:
    url = req.full_url  # Replace with your URL
    response = urllib.request.urlopen(url)
except HTTPError as e:
    code = e.code
    msg = e.reason
    hdrs = e.headers
    fp = e.fp
    raise HTTPError(url, code, msg, hdrs, fp)

Note: Replace req.full_url with the actual URL you are requesting.

The code above demonstrates how to handle the HTTPError exception and retrieve information such as the URL, status code, reason message, headers, and file pointer. You can modify the code to suit your specific requirements.

For more information about handling HTTP errors in Python, refer to the urllib documentation.