Ben Chuanlong Du's Blog

It is never too late to learn.

Dealing With Environment Variables in Python

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

  1. os.environ is a dict-like object containing environment variables as keys and their values as values. You can query the value of an environment variable using os.environ[ENV_VAR_NAME]. And you can set the value of an environemnt variable using os.environ[ENV_VAR_NAME] = val

Check Whether a Path Exists in Golang

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

Tips & Traps

There is no built-in function to check for the existence of a path in Golang. However, you can achieve it using os.Stat + os.IsNotExist.

Absolute or Relative Path for Executables

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

When you call shell commands in your code, a nature question to ask is whether you should the absolute or a relative path (command). Both ways have their advantages and disadvantages …

Path in Rust

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!