PyYAML 查找不正确的 YAML 语法错误行

Question

我正在读取 YAML 文件。如果存在导致异常的语法错误，我会将异常发送给记录器。有什么方法可以在我的日志消息中识别 YAML 文件的哪一行包含语法错误？

try:
    with open(input_path, "r") as yaml_file:
        yaml_dict = yaml.load(yaml_file)
except FileNotFoundError:
    logger.error("YAML file {} does not exist".format(input_path), exc_info=True)
    sys.exit(1)
except:
    logger.critical("Error in reading or parsing YAML file {}".format(input_path), exc_info=True)
    sys.exit(1)

Answer 1

看看 PyYAMLDocumentation，寻找 YAMLError():

try:
    yaml.load("unbalanced blackets: ][")
except yaml.YAMLError, exc:
    if hasattr(exc, 'problem_mark'):
        mark = exc.problem_mark
        print "Error position: (%s:%s)" % (mark.line+1, mark.column+1)

Error position: (1:22)