def pip_update_reqs(roles=['webapp_servers', 'celery_servers']):
    """
    Updates your virtualenv from requirements.txt.
    """
    if _current_host_has_role(roles):
        print("=== UPDATING REQUIREMENTS ===")
        with cd(env.REMOTE_CODEBASE_PATH):
            run(env.REMOTE_VIRTUALENV_NAME % "workon %s && ./manage.py ft_pip_update_reqs")
dataset/ETHPy150Open duointeractive/django-fabtastic/fabtastic/fabric/commands/c_common.py/pip_update_reqs/swapped operands of `%`