Replace tokens in yaml file python

Question

I have the following yaml file config.yml:

PATH1: /this/is/the/first/path
PATH2: $PATH1/plus/second/path

I read it in python in this way:

import yaml

with open("../etc/test.yml", "r") as f:
    config = yaml.safe_load(f)
print(config)

and this is obviously what I get when I print config dictionary:

{'PATH2': '$PATH1/plus/second/path', 'PATH1': '/this/is/the/first/path'}

What I would have instead is:

{'PATH2': '/this/is/the/first/path/plus/second/path', 'PATH1': '/this/is/the/first/path'}

Is there any built-in way to achieve this goal? Or I have to create something to replace them on my own?

user_9771560 · Answer

PY-yaml library doesn't resolve environment variables by default. You need to define an implicit resolver that will find the regex that defines an environment variable and execute a function to resolve it.

this is a link that can help you do it https://newbedev.com/how-to-replace-environment-variable-value-in-yaml-file-to-be-parsed-using-python-script

Replace tokens in yaml file python

1 Answers