转载 https://www.cnblogs.com/angdh/p/10632651.html
root_path = os.path.abspath(os.path.dirname(__file__)).split('shippingSchedule')[0]
（相对的路径（获取文件当前路径））.剪切("匹配字符")[0]
base_dir = os.path.join(sys.path[1], '')
yaml_name = os.path.join(base_dir, 'config','gczx_caps.yaml')
当前路径的相对路径
base_dir = os.path.dirname(os.path.dirname(__file__))