aiomysql
Problem statement Our company uses sqlalchemy + aiomysql, and sometimes we see blow error. Not sure what happens aiomysql version is 0.2.0. File "sqlalchemy/pool/base.py", line 894, in _checko...
Xiong
python asyncio - 2. Subprocess
asyncio.create_subprocess_exec() and asyncio.create_subprocess_shell() are the async counterparty of subprocess.Popen in the multi-process world. For each subprocess, it creates a thread to watch ...
Python dis module
Dis Output interpretation This stackoverflow post has a great diagram: For a sample code from asyncio import sleep async def f(): await sleep(0) We have below disassembled bytecode. (1)|...
Python -- Asyncio
Generator Follow below peps to understand semantics of generator and async/await. Also, see https://asyncio-notes.readthedocs.io/en/latest/asyncio-history.html for the history of asyncio. Another ...
Defer in C
About I came across a post about defer.h on Discord today. And I just fell love in it! I was always curious how to achieve defer in C. In C++, we can use destructor. In Golang, it is provided out ...