#check python version
python -V 
# install 
pip3 install virtualenv
# create env 
python3 -m venv base
# activate
source base/bin/activate
# deativate
deactivate

#packing requirements
pip freeze > requirements.txt

#delete
rm -rf venv

# crontab
crontab -e
* * * * * /path/to/venv/bin/python /path/to/code.py

# new env install packing
pip install -r requirements.txt