【PX4日志解析报错】pyulog工具解析日志出错_python解码px4飞行日志-优快云博客

px4的日志文件一直通过pyulog做解析但是发现有的时候会出现错误，解析不了，使用网站解析也会失败，但是这把数据很重要所以想办法必须解决，报错如下

zzh@zzh-System-Product-Name:~/Desktop/log/log223/log42$ ulog_info -m MESSAGE log_42_2025-2-23-17-08-34.ulg 
Traceback (most recent call last):
  File "/home/zzh/.local/bin/ulog_info", line 8, in <module>
    sys.exit(main())
  File "/home/zzh/.local/lib/python3.8/site-packages/pyulog/info.py", line 85, in main
    ulog = ULog(ulog_file_name, None, disable_str_exceptions)
  File "/home/zzh/.local/lib/python3.8/site-packages/pyulog/core.py", line 138, in __init__
    self._load_file(log_file, message_name_filter_list)
  File "/home/zzh/.local/lib/python3.8/site-packages/pyulog/core.py", line 823, in _load_file
    self._read_file_definitions()
  File "/home/zzh/.local/lib/python3.8/site-packages/pyulog/core.py", line 868, in _read_file_definitions
    msg_info = self._MessageInfo(data, header, is_info_multiple=True)
  File "/home/zzh/.local/lib/python3.8/site-packages/pyulog/core.py", line 562, in __init__
    self.value = ULog.parse_string(data[1+key_len:])
  File "/home/zzh/.local/lib/python3.8/site-packages/pyulog/core.py", line 93, in parse_string
    ret = _parse_string(cstr)
  File "/home/zzh/.local/lib/python3.8/site-packages/pyulog/core.py", line 19, in _parse_string
    return str(cstr, 'utf-8', errors)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xe5 in position 218: unexpected end of data

定位问题，我是用linux，找到运行的包pyulog包，在python3.8下面
打开这个core.py文件
找到报错的这个函数_parse_string

@staticmethod
    def parse_string(cstr):
        """
        wrapper for _parse_string with
        parametrized exception handling
        """
        ret = ''
        if _RUNNING_PYTHON3 and ULog._disable_str_exceptions:
            ret = _parse_string(cstr, 'ignore')
        else:
            ret = _parse_string(cstr)
        return ret

经过deepseek指点，把else后面的分支改成

        else:
            # 默认使用 'replace' 替换无法解码的字节
            ret = _parse_string(cstr, 'replace')

保存后，再次运行pyulog命令，全部解析出来了