.flaskenv or .env file not being read

Question

I have a flask app that uses some enviroment variables, I don’t now what has changed but now it doesn’t read the variables in the .flaskenv file, already tried changing its name to .env, still not working.

This is the .flaskenv file:

    FLASK_APP=app
    FLASK_ENV=development
    CONSUMER_KEY=
    CONSUMER_SECRET=
    ACCESS_KEY=
    ACCESS_SECRET=
    SEC_USERNAME=
    SEC_PASSWORD=

In the app.py file:

    from flask import Flask, render_template, url_for, request, redirect, session, g
    import os

    s_user = os.environ.get('SEC_USERNAME')
    s_pass = os.environ.get('SEC_PASSWORD')

    print(s_user)
    print(s_pass)

    if __name__ == "__main__":
    app.run()

It prints “none”.

If i do flask run :

Usage: flask run [OPTIONS]

Error: Could not locate Flask application. You did not provide the FLASK_APP environment variable.

For more information see http://flask.pocoo.org/docs/latest/quickstart/

pip list:

(venv) λ pip list
Package           Version
----------------- ----------
certifi           2020.4.5.2
chardet           3.0.4
click             6.7
Flask             0.12.2
idna              2.9
itsdangerous      0.24
Jinja2            2.10
MarkupSafe        1.0
oauthlib          3.1.0
pip               19.2.3
PySocks           1.7.1
python-dotenv     0.13.0
requests          2.23.0
requests-oauthlib 1.3.0
setuptools        41.2.0
six               1.15.0
tweepy            3.8.0
urllib3           1.25.9
Werkzeug          0.13

Asked By: Santiago García

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Answer 1

As written in the flask docs:

If python-dotenv is installed, running the flask command will set environment variables defined in the files .env and .flaskenv. This can be used to avoid having to set FLASK_APP manually every time you open a new terminal, and to set configuration using environment variables similar to how some deployment services work.

make sure to run pip install python-dotenv

Edit

This flask seems to be very old, try updating it with

pip install -U Flask

Answered By: Reznik

.flaskenv or .env file not being read

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