Venv Module

Create new Virtual environment:
```
$ Python -m venv project_name 
```
Create a virtual environment with access to all the global installed libraries.
⚠ Removing a library here will remove the library globally too, but installing new one and then removing new ones won't affect the global list
```
$ Python -m venv my_project --system-site-packages 
```
Activate newly created virtual environment:
```
$ project_name\Scripts\activate.bat
```
To save all the installed installed libraries into a requirement.txt file:
```
$ Pip freeze > requirements.txt
```
To install all libraries listed in requirements.txt in new venv project:
```
$ Pip install -r requirements.txt # filename can be anything
```
To deactivate environment:
```
$ Deactivate
```
# it will only deactivate virtual environment, it will not delete the project directory and files created.

Note: It is best practice to make 'venv' directory in main project directory and never to put any project file or folder in venv directory, virtual environments must be considered as a use and throw elements. Also we should never commit 'venv' directory to source control also.