capybara/virtualenv/lib/python2.7/site-packages/pip/locations.py
def running_under_virtualenv():
    """
    Return True if we're running inside a virtualenv, False otherwise.

    """
    if hasattr(sys, 'real_prefix'):
        return True
    elif sys.prefix != getattr(sys, "base_prefix", sys.prefix):
        return True

    return False
def running_under_virtualenv():
    if hasattr(sys, 'real_prefix'):
        return True
    elif sys.prefix != getattr(sys, "base_prefix", sys.prefix):
        return True

    return False
def running_under_virtualenv ( ) : if hasattr ( sys , 'real_prefix' ) : return True elif sys . prefix != getattr ( sys , "base_prefix" , sys . prefix ) : return True return False
Return True if we're running inside a virtualenv, False otherwise.
Return True if we re running inside a virtualenv False otherwise .