How to get environment variables in Python

Method 1 os reading

os reads directly and uses os to obtain the environment variable dictionary

Print All environment variables, traverse the dictionary

Method 2 pyhocon reading

pyhocon is a python configuration management library

pyhocon One of its functions is that it can be directly referenced using ${} in the configuration file. When pyhocon parses, it will automatically implement the above resolveEnv logic, corresponding to the environment variable.

The official website is as follows:https://github.com/chimpler/pyhocon

The configuration file is as follows:

default.conf

${HOME} will automatically obtain the HOME in the environment variable when parsing and using parsing

How to use

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