PipFile

Pipenv is a tool that combines the features of pip and virtual environments to simplify package management in Python projects.

Installation

pip install pipenv

Creating a Virtual Environment - Pipfile

Creates a Pipfile to describe the project's environment; it's similar to a requirements.txt file. If there is a Pipfile then it installs all the packages present in this file.

pipenv install

Install packages

Installing requests package

Note: It creates a virtual environment for the project if it doesn't already exist.

pipenv install requests

Uninstall Packages

pipenv uninstall requests

Activate Virtual Environment

pipenv shell

Deactivate Virtual Environment

exit;

Remove Virtual Environment

pipenv --rm

Common Commands

To Run Python in a virtual environment
```
  pipenv run python
```
To change the Python to a different version
```
  pipenv --python 3.6
```
Path to your virtual environment
```
  pipenv --venv
```
Security issues within the packages
```
  pipenv check
```
Dependency graph or tree
```
  pipenv graph
```
Update the pipfile.lock with the latest versions present in pipfile - production
```
  pipenv lock
```
Create a virtual environment with versions and packages present in the Pipfile.lock i.e ignoring Pipfile
```
  pipenv install --ignore-pipfile
```
Adds a development package that is not required for production.
```
  pipenv install pytest --dev
```
Install packages from requirements.txt
```
  pipenv install -r requirements.txt
```
Update back requirements.txt file with latest installations and packages
```
  pipenv lock -r
```

Environment Variables

.env file: Stores key-value pairs for environment variables.

About Pipfile

Describe the project's environment, including dependencies and settings.
Uses the TOML format (Key, value pairs).
source: It is a URL from which the dependencies get downloaded. This is very useful if the repositories are hosted in a private corporate environment.
packages: Lists all packages, and if '*' is used, it means the latest versions will be installed.
requires: Specifies the current Python version.

About Pipfile.lock

Automatically generated and should not be modified.
Locks the versions of packages and includes hash values.

References

Corey Schafer - link