A common use case in a Fabric script is to: 1. Activate the virtualenv 2. cd to the project dir Here is a simple context manager to achieve this with a one line with statement:

gistfile1.py

"""
A common use case in a Fabric script is to:
  1. Activate the virtualenv
  2. cd to the project dir

Here is a simple context manager to achieve this with a one line with statement:
"""

# fabconfig.py
def dev():
    env.build = 'dev'
    env.virtualenv = '/path/to/ve/'
    env.activate = 'source %(virtualenv)s/bin/activate' % env
    env.code_dir = '/var/www/sap/gsa/builds/%(build)s' % env

# fabfile.py
from fabric.api import prefix
from contextlib import contextmanager as _contextmanager

@_contextmanager
def virtualenv():
    with cd(env.virtualenv), prefix(env.activate), cd(env.code_dir):
        yield

def test_management_command():
    with virtualenv():
        run('./manage.py solr update_all')

# local shell
fab dev solr_update_all