package_utils.py 文件源码

def get_venv_basedir():
    """Returns the base directory of the virtualenv, useful to read configuration and plugins"""

    exec_prefix = get_config_vars()['exec_prefix']
    has_real_prefix = hasattr(sys, 'real_prefix') or (hasattr(sys, 'base_prefix') and sys.base_prefix != sys.prefix)
    if has_real_prefix is False or (hasattr(sys, 'real_prefix') and exec_prefix.startswith(sys.real_prefix)):
        raise EnvironmentError('You must be in a virtual environment')

    return os.path.abspath(get_config_vars()['exec_prefix'] + '/../')