python PublicMethod方法如下

import os
import yaml
import sys
import logging
class PubMethod:
    @staticmethod
    def read_yaml(file):
        if os.path.isfile(file):
            fr = open(file, 'r', encoding='utf-8')
            yaml_info = yaml.safe_load(fr)
            fr.close()
            return yaml_info
        else:
            logging.error(file, '文件不存在')
            sys.exit()