How to see request header and body? When making requests, we may want to see exactly what are being requested. With requests, it is easy do access the request header and request body: import requests url = "http://httpbin.org/post" payload = {"apple": 10, "pear": [20, 30], "img": "http://example.com/demo.jpg"} r = requests.post(url, json=payload) print(f"request headers: {r.request.headers}") print(f"request body: {r.request.body}") A sample output is: request headers: {'User-Agent': 'python-requests/2.19.1', 'Accept-Encoding': 'gzip, deflate', 'Accept': '*/*', 'Connection': 'keep-alive', 'Content-Length': '69', 'Content-Type': 'application/json'} request body: b'{"apple": 10, "pear": [20, 30], "img": "http://example.

In this post, I will share how PyTorch set the number of the threads to use for its operations.

在实际编程中，我们总会遇到各种各样的代码运行问题，如何快速发现问题的根源需要一些系统的方法，构造一个最小的能够复现错误的环境至关重要，也就是所谓的 MWE，minimal working example。

To build different projects, we may need to install different versions of the same software. To use the specific version, we may create a sym link to the executable with that version. On Ubuntu, we can also switch command versions easily with update-alternatives.

My notes on several issues when installing and running uWSGI.

In my previous post, I write about how to download an image from URL using requests package. In this post, I want to share ways to make the download speed faster.

IrfanView is a lightweight and fast image viewer for Windows. Here are some settings to make it more useful.

When I am working on a project, I find that the logging message is printed twice. The following minimal code can reproduce this issue:

Recently, I want to download some images using Python. This is what I’ve learned after survey.

I have several terminal emulators installed on my Mac: kitty, Alacritty and iterm2. When I start a Tmux session in Alacritty and try to create another tmux session in kitty, I noticed this strange error that I have never met before:

In my old post, I have shared how to run the builtin development server to serve the web API. For production, we need to use more powerful web servers. Flask complies to the WSGI (Web Server Gateway Interface) specification and can work with any web server that conforms to WSGI.

In this post, I want share how to run Flask applications using uWSGI — a popular WSGI-compliant server.

Conda is the default package and environment management tool shipped with Anaconda.

This post logs my cheatsheet and notes for working with virtual environments with conda.

After running a Ubuntu docker container, I found that the default time zone is UTC. I want to change it to my local timezone.

I was using asyncio inside a view function for Flask to run some asynchronous functions and met an error.

Some of the tricks when writing Markdown files.

If you find yourself repeatedly type some similar-structured text in Vim/Nvim, you need to ask yourself if there is a better way to do it.

In Vim or Neovim, showing the yanked region in color gives use visual feedback on what we have copied. Here is how you can highlight yanked region in Vim or Neovim.

人工智能 (AI)甚嚣尘上，动则称颠覆，各家公司纷纷推出了自己的 AI 产品，但是这些产品真的有那么多人用吗？

two meetings 即将或者正在召开，上个谷歌也越来越难，最近墙对各种工具的阻断非常严重，连之前使用了 obfs 的 ss 都不行了，最近一段时间也处于时断时续的状态。

Justmysocks 之前一直用的都是 shadowsocks 协议，对墙的反制能力不行，每到关键时候就显露疲态。好消息是，justmysocks 终于在最近推出了基于 v2ray 协议的线路。

I was doing some typograph for Chinese text and want to insert a space equal to the width of a Chinese character.

最近在做一些中文排版的工作，有一个需求是在中文字符之间插入空格，并且空格的宽度等于中文字符的宽度，在某些情况下这样排版显得更加美观。