[Python] Why I can't access my environment variable from .env file in vscode python?

What I am trying to do? I am trying to access my environment variable from the .env file and print its value in the terminal.

What is the issue? When I run the script in the terminal I keep getting the error none

Some more info:

I am using Windows 10

The version of dotenv is 0.20.0

I downloaded it using python -m pip install python-dotenv

The code

.env file - export PRIVATE_KEY = 0xc3c4e4fe27d8e6b06710e713878e4488c034ce346a578fdfa78bb3d335130eec

The Python file -

from dotenv import load_dotenv

import os

load_dotenv()

print(os.getenv("PRIVATE_KEY"))

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