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2017-12-24 Python

Pipenv

Pipenv#

Now the official recommendation for managing python dependencies is pipenv

Advantages#

  • You no longer need to use pip and virtualenv separately. They work together.
  • Managing a requirements.txt file can be problematic, so Pipenv uses the upcoming Pipfile and Pipfile.lock instead, which is superior for basic use cases.
  • Hashes are used everywhere, always. Security. Automatically expose security vulnerabilities.

Installing#

Install on your system:#
    pip install pipenv
Install a package#
    pipenv install requests
  1. Creates a pipfile
  2. Installs requests
  3. Creates a lockfile
Installing just for development#

Use the ---dev parameter

    pipenv install --dev nose2

Then to install with dev packages run:

    pipenv install --dev

Open shell#

    pipenv shell

then exit shell instead of deactivate

Use requirements.txt#

If you still want to use this relic you can:

    pipenv lock -r

Use with django#

To run commands from the environment prefix the command with:

    pipenv run xxx

Eg.

    pipenv run ./manage.py runserver

Personally I don’t like this but perhaps the advantages outway the longer command

Using Pipenv with Visual Studio#

Often times we want intellisense from the python virtualenv.

With pipenv and vscode we first need to find where the virtual environment is with:

    pipenv --venv

Then open cmd + shift + p and Select Interpreter and paste the path

Source#