[Python] Do we need to run load_dotenv() in every module?

I have a .env defined with the following content:

env=loc


I have three python module that make use of this variable.

├── __init__.py
├── cli.py
|── settings.py
├── commands
│ ├── __init__.py
│ └── output.py


settings.py:

from dotenv import load_dotenv

load_dotenv()

if not os.getenv("env"):
raise TypeError("'env' variable not found in .env file")


output.py:

import os

def output():
return getenv("env")


cli.py:

import settings
from commands.output import output
import os

CURR_ENV = getenv("env")
print(CURR_ENV)
print(output())


Output:

loc
None


Why is the output from output.py not loc? The environment variables were loaded when load_dotenv() was run for the first time.

Do I have to run load_dotenv() every time I need to access the environment variables?

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