10/12/2025 ยท 1 min read
Virtual environments setup
venv is a low level environment in python.
$ pip install virtualenv # low level virtual environment, less prefereable to use
$ pip3 install virtualenvwrapper # high level environment with abstraction, more preferred
$ python<version> -m venv <virtual-environment-name>To activate and deactivate environment:
source env/bin/activate
and
~ deactivate
Virtualenvwrapper is a set of extensions built on top of virtualenv. It provides a more convenient and streamlined way to manage your virtual environments.
export WORKON_HOME=~/.virtualenvs
export VIRTUALENVWRAPPER_PYTHON=/Library/Frameworks/Python.framework/Versions/3.6/bin/python3
source /usr/local/bin/virtualenvwrapper.sh````
mkvirtualenv first-env
mkvirtualenv second-env
workon first-env
workon second-env
deactivateFind dependencies of a Project:
-pip list
-pip freeze
How to find a current shell is bash or zsh
-$ echo $0 -$ echo $SHELL
echo $0 is more accurate and if you type bash in zsh shell
To change prompt to include a new line
PS1="$PS1\n"
Uninstall existing versions
pip uninstall werkzeug Flask-Login
Reinstall all dependencies
pip freeze > requirements.txt
pip install -r requirements.txt