python-ssh链接linux查询日志，并按日志等级在控制台分颜色输出日志

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import paramiko # unicode_utils.py def to_str(bytes_or_str):     """     把byte类型转换为str     :param bytes_or_str:     :return:     """     if isinstance(bytes_or_str, bytes):         value = bytes_or_str.decode('utf-8')     else:         value = bytes_or_str     return value   class SSHConnection(object):       def __init__(self, host_dict):         self.host = host_dict['host']         self.port = host_dict['port']         self.username = host_dict['username']         self.pwd = host_dict['pwd']         self.__k = None       def connect(self):         transport = paramiko.Transport((self.host, self.port))         transport.connect(username=self.username, password=self.pwd)         self.__transport = transport       def close(self):         self.__transport.close()       def run_cmd(self, command):         """          执行shell命令,返回字典          return {'color': 'red','res':error}或          return {'color': 'green', 'res':res}         :param command:         :return:         """         ssh = paramiko.SSHClient()         ssh._transport = self.__transport         # 执行命令         stdin, stdout, stderr = ssh.exec_command(command)         # 获取命令结果         res = to_str(stdout.read())         # 获取错误信息         error = to_str(stderr.read())         # 如果有错误信息，返回error         # 否则返回res         #这里代码写了根据状态控制台打印不同颜色，正常显示绿色，错误显示红色         if error.strip():             return f"\033[1;31;40m'res': {error}\033[0m"         else:             return f"\033[1;32;40m'res': {res}\033[0m"       def upload(self, local_path, target_path):         # 连接，上传         sftp = paramiko.SFTPClient.from_transport(self.__transport)         # 将location.py 上传至服务器 /tmp/test.py         sftp.put(local_path, target_path, confirm=True)         # print(os.stat(local_path).st_mode)         # 增加权限         # sftp.chmod(target_path, os.stat(local_path).st_mode)         sftp.chmod(target_path, 0o755)  # 注意这里的权限是八进制的，八进制需要使用0o作为前缀       def download(self, target_path, local_path):         # 连接，下载         sftp = paramiko.SFTPClient.from_transport(self.__transport)         # 将location.py 下载至服务器 /tmp/test.py         sftp.get(target_path, local_path)       # 销毁     def __del__(self):         self.close()