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How Can I Use 'venv' os.environ variables in my Flask app running with Apache?

I have a flask test website and i want to use os.environ variables from venv or from Apache's SetEnv, but i can't figure it out.
app.py:
from flask import Flask
import os
app = Flask(__name__)
#app.config.from_object('site3.default_settings')
#app.config.from_envvar('SITE3_SETTINGS')
#app.config.from_prefixed_env()
password = "test"
password = os.environ
#app.route('/')
def home():
my_env_var = os.environ.get('MY_ENV_VAR')
return f"3. site!!:{my_env_var} BU BIR FLASK UYGULAMASIII!!<br> Şifre: {password}\n"
The curl output is:
3. site!!:None BU BIR FLASK UYGULAMASIII!! Şifre: environ({'APACHE_RUN_DIR': '/var/run/apache2', 'SYSTEMD_EXEC_PID': '20419', 'APACHE_PID_FILE': '/var/run/apache2/apache2.pid', 'JOURNAL_STREAM': '8:128103', 'PATH': '/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin', 'INVOCATION_ID': '9afa423a83864973b497217939a094fc', 'APACHE_LOCK_DIR': '/var/lock/apache2', 'LANG': 'C', 'APACHE_RUN_USER': 'www-data', 'APACHE_RUN_GROUP': 'www-data', 'APACHE_LOG_DIR': '/var/log/apache2', 'PWD': '/', 'HOME': '/var/www'})
apache config:
<VirtualHost *:80>
ServerName site3.com
ServerAlias www.site3.com
SetEnv SECRETT "devet"
SetEnv MY_ENV_VAR value
SetEnv ENVTYPE production
WSGIDaemonProcess flaskapp user=www-data group=www-data threads=5 python-home=/var/www/site3/venv
WSGIScriptAlias / /var/www/site3/app.wsgi
SetEnv SECRETT denet
SetEnv MY_ENV_VAR valuee
<Directory /var/www/site3>
WSGIProcessGroup flaskapp
WSGIApplicationGroup %{GLOBAL}
Order deny,allow
Allow from all
</Directory>
Alias /static /var/www/site3/static
<Directory /var/www/site3/static/>
Order allow,deny
Allow from all
</Directory>
ErrorLog /var/www/site3/logs/error.log
CustomLog /var/www/site3/logs/access.log combined
</VirtualHost>
app.wsgi:
import sys
sys.path.insert(0, '/var/www/site3')
#activate_this = '/var/www/site3/venv/bin/activate'
#with open(activate_this) as file:
# exec(file.read(), dict(__file__=activate_this))
from app import app as application
if __name__ == "__main__":
application.run()
It is my first question and i am trying to learn. Thank you all.
when i use 'flask run' and curl localhost:5000, everything works as i expected.

add an .env file to your project and load all the variables found as environment variables, example:
# this is your .env file
DATABASE_URL = postgresql... etc
then pip install python-dotenv
pip install python-dotenv
then use load_dotenv() in your app settings
from dotenv import load_dotenv
import os
# then call load_dotenv() when creating your app
def create_app():
app = Flask(__name__)
load_dotenv()
...
# call your variables as follows:
DATABASE_URL = os.getenv("DATABASE_URL") # defined in .env
...
return app
when executing the app, add app:create_app() as parameter, e.g. with gunicorn, on a docker entrypoint your script looks like this:
exec gunicorn --bind 0.0.0.0:80 "app:create_app()"
try to add it where you define the app in app.wsgi

apache lib-wsgi 403 Forbidden

The only way I can run apps on my local machine is by using apache and lib-wsgi. I have installed all the relevent packages including encodings but in my browser I am getting a 403 Forbidden error and in my error logs I am getting this:
AH00051: child pid 28900 exit signal Aborted (6), possible coredump in /etc/apache2
Fatal Python error: Py_Initialize: Unable to get the locale encoding
ImportError: No module named 'encodings'
I have run
sudo chmod a+x on my files
and
sudo chmod +rw on my folders.
and
sudo chown on my working directories
What do I need to do to get this working?
These are my files:
.conf file:
<VirtualHost *:80>
ServerAdmin webmaster#localhost
DocumentRoot /var/www/html/demo1
ServerName 127.0.0.1
# Give an alias to to start your website url with
WSGIDaemonProcess application python-home=/var/www/html/demo1
WSGIProcessGroup flask-hello-app
WSGIApplicationGroup %{GLOBAL}
WSGIScriptAlias /demo1 /var/www/html/demo1/flask-hello-app.wsgi
<Directory /var/www/html/demo1/>
# set permissions as per apache2.conf file
Options FollowSymLinks
# AllowOverride None
# Require all granted
Order deny,allow
Allow from all
</Directory>
ErrorLog ${APACHE_LOG_DIR}/error.log
LogLevel warn
CustomLog ${APACHE_LOG_DIR}/access.log combined
</VirtualHost>
# vim: syntax=apache ts=4 sw=4 sts=4 sr noet
flask-hello-app.wsgi
#!/uae/bin/python3
import logging
import sys
logging.basicConfig(stream=sys.stderr)
sys.path.insert(0, '/var/www/html/demo1/')
from application import app as application
application.secret_key = 'super_secret_key'
flask-hello-app.py
from flask import Flask
from flask_sqlalchemy import SQLAlchemy
import os
app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = 'postgresql+psycopg2://postgres:F00tBall#127.0.0.1:5432/example'
db = SQLAlchemy(app)
class Person(db.Model):
__tablename__ = 'persons'
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(), nullable=False)
db.create_all()
#app.route('/')
def index():
return 'Hello '
if __name__ == '__main__':
app.run()
I really need to know how to get this working.
Thanks.

import face_recognition ImportError: No module named face_recognition in mod_wsgi

I am trying to deploy my project in mod_wsgi.
Python : 3.6
Tensorflow 1.14
Flask 1.1.1
When I created Virtual Environment in python, project run successfully.
Then I am moving to deploy in mod_wsgi. That time its showing below error.
import face_recognition
ImportError: No module named face_recognition
FlaskApp.conf
<VirtualHost ***.***.***.***:80>
ServerName test.com
ServerAdmin test#test.com
WSGIScriptAlias / /var/www/FlaskApp/flaskapp.wsgi
<Directory /var/www/FlaskApp/FlaskApp/>
Order allow,deny
Allow from all
</Directory>
Alias /static /var/www/FlaskApp/FlaskApp/static
<Directory /var/www/FlaskApp/FlaskApp/static/>
Order allow,deny
Allow from all
</Directory>
ErrorLog ${APACHE_LOG_DIR}/error.log
LogLevel warn
CustomLog ${APACHE_LOG_DIR}/access.log combined
</VirtualHost>
flaskapp.wsgi
#!/usr/bin/python
import sys
import logging
logging.basicConfig(stream=sys.stderr)
sys.path.insert(0,"/var/www/FlaskApp/")
from FlaskApp import app as application
application.secret_key = 'mykey'
if I add package-site manually and modify flaskapp.wsgi
#!/usr/bin/python
import sys
import logging
logging.basicConfig(stream=sys.stderr)
sys.path.insert(0,"/var/www/FlaskApp/")
sys.path.append('/var/www/FlaskApp/FlaskApp/venv/lib/python3.6/site-packages/')
from FlaskApp import app as application
application.secret_key = 'Addyoursecretkey'
its throwing below error
ImportError: /var/www/FlaskApp/FlaskApp/venv/lib/python3.6/site-packages/tensorflow/python/_pywrap_tensorflow_internal.so: undefined symbol: _Py_FalseStruct
I tried both. How I can deploy my project in mod_wsgi.

Problems with deploying in flask wsgi python2 on apache2

I'm trying to deploy my flask on apache2. File structure is following inside /var/www/html/
parsers/
app.wsgi
app/
__init__.py
init.py
static/
templates/
My app.wsgi file
#!/usr/bin/python
import sys
import logging
sys.path.insert(0, '/var/www/html/parsers/')
from init import app as application
logging.basicConfig(stream=sys.stderr)
My parsers.conf file in /etc/apache2/site/sites-available/
<VirtualHost *:80>
ServerName 143.107.183.175:23580
WSGIScriptAlias / /var/www/html/parsers/app.wsgi
<Directory /var/www/html/parsers>
WSGIApplicationGroup %{GLOBAL}
Order deny,allow
Allow from all
</Directory>
</VirtualHost>
I'm getting the page
Index of/
What are the problems?

Apache and Flask: attempt to invoke directory as script

I have an Apache (ver. 2.2.15) server (running on Linux CentOS), where I have a lot of .cgi scripts located in /var/www/cgi-bin, aliased:
ScriptAlias /cgi-bin "/var/www/cgi-bin"
And it works fine when I enter mydomain/cgi-bin/something.cgi.
Now I want to have also Flask application running within Apache server on 80 port. The app is located in /var/www/cgi-bin/app. So, I created simple Flask app - a.py:
from flask import Flask
app = Flask(__name__)
#app.route('/')
def hello_world():
return 'Hello World!'
and a.wsgi file:
import sys
import site
sys.path.insert(0, '/var/www/cgi-bin/app')
site.addsitedir('/var/www/cgi-bin/app:/<my_python_path>/Lib/site-packages')
from app import app as application
Also in /etc/httpd/conf/httpd.conf I have created required virtualhost:
<VirtualHost *:80>
ServerName app.<mydomain>:80
WSGIDaemonProcess app python-path=/var/www/cgi-bin/app:/<my_python_path>/Lib/site-packages user=user1 group=user1 threads=5
WSGIScriptAlias /cgi-bin/app /var/www/cgi-bin/app/a.wsgi
<Directory /var/www/cgi-bin/app>
WSGIProcessGroup app
WSGIApplicationGroup %{GLOBAL}
Order deny,allow
Allow from all
</Directory>
ErrorLog /var/www/cgi-bin/app/logs/error.log
CustomLog /var/www/cgi-bin/app/logs/custom.log combined
</VirtualHost>
But everytime I try to open mydomain/cgi-bin/app/ in the error.log file I see this error:
(...) attempt to invoke directory as script: /var/www/cgi-bin/app/
Do you have an idea what have I done wrong here?

You should not put your Flask app under cgi-bin, in fact it should not be under the DocumentRoot at all. Move it somewhere else entirely - I like /srv/, but it's up to you - and change the WSGI alias appropriately.