Manage virtualenv in python 2.7 container

Build Environment
1

Can anyone point me towards an example configuration for managing/activating the virtualenv in a python 2.7 container? All of the example config files I found online (see snippet below) assume python 3.X and use the ‘venv’ module, which appears to not be available in python 2.7.

jobs:
  build:
    docker:
      - image: circleci/python:2.7
    steps:
      - checkout
      - run:
          name: install dependencies
          command: |
            python3 -m venv venv
            . venv/bin/activate
            pip install -r requirements.txt
      - run:
          name: run tests
          command: |
            . venv/bin/activate
            python manage.py test

Specifically:
‘python3 -m venv venv’ errors with 'python3: command not found’
and when I tried to replace python3 with python:
‘python2 -m venv venv’, errors with ‘No module named venv’

My use case is quite simple. I just need to be able to install some dependencies via pip, cache the virtualenv, and then run tests using those dependencies.

2

I’m not sure if this is the correct solution or not, but it seems to be working for me at the moment.

- run:
      name: install dependencies
      command: |
        mkdir -p ./venv
        virtualenv ./venv
        . venv/bin/activate
        pip install -r requirements.txt
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