Detailed explanation of Python HTTP requests: sending, receiving and parsing network requests

In today's network world, Http requests have become an essential technology, which allows us to communicate with servers Communicate, obtain data and perform various operations. python As a powerful programming language, it provides a wealth of libraries and tools, making HTTP requests easier to implement. Understanding and mastering the principles and implementation methods of HTTP requests is crucial for developers.

In this article, we will explain in detail the basic process of Python HTTP requests, including sending requests, receiving responses and parsing responses. At the same time, we will provide demonstration code to help you quickly master the implementation of HTTP requests.

Send HTTP request

1. First, you need to create a requests.Sess<strong class="keylink">io</strong>n() object to manage HTTP requests.

2. You can then use the requests.get() or requests.post() method to send a GET or POST request.

3. When sending a request, you can specify the requested URL, request header information, request body and other parameters.

4. When you send a request, the server will return a response.

Receive HTTP response

5. When you send a request, the server will return a response. You can get the status code of a response using the requests.Response.status_code property.

6. You can use the requests.Response.headers property to get response header information.

7. You can use the requests.Response.content property to get the response body.

Parse HTTP response

8. You can use the <strong class="keylink">JSON</strong>.loads() function to parse the response body in jsON format.

9. You can use the xml.etree.ElementTree() library to parse the response body in XML format.

10. You can use the <strong class="keylink">html</strong>.parser.HTMLParser() library to parse the response body in HTML format.

Demo code

import requests

# 发送 GET 请求
response = requests.get("https://www.example.com")

# 获取响应状态码
status_code = response.status_code

# 获取响应头信息
headers = response.headers

# 获取响应体
content = response.content

# 解析 JSON 格式的响应体
json_data = json.loads(content)

# 解析 XML 格式的响应体
xml_data = xml.etree.ElementTree.fromstring(content)

# 解析 HTML 格式的响应体
html_data = html.parser.HTMLParser().feed(content)

Conclusion

Through the explanation of this article, you already have an in-depth understanding of the basic process of Python HTTP requests. You've learned how to send requests, receive responses, and parse responses. I believe you have been able to skillfully use HTTP request technology in your project.

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