轉載 https://www.cnblogs.com/angdh/p/10632651.html
root_path = os.path.abspath(os.path.dirname(__file__)).split('shippingSchedule')[0]
（相對的路徑（獲取文件當前路徑））.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')
當前路徑的相對路徑
base_dir = os.path.dirname(os.path.dirname(__file__))