运用paramiko远程执行命令报错：TypeError: from_buffer() cannot return the address of the raw string withi....

矫情吗；* 2022-12-14 14:58 67阅读 0赞

## **问题描述：** ##

运用paramiko远程执行命令报错：

from cryptography.hazmat.backends import default_backend
    No handlers could be found for logger "paramiko.transport"
    Traceback (most recent call last):
      File "test.py", line 17, in <module>
        ssh()
      File "test.py", line 8, in ssh
        ssh.connect('172.17.0.3',22,'root','111')
      File "/usr/local/lib/python2.7/dist-packages/paramiko/client.py", line 406, in connect
        t.start_client(timeout=timeout)
      File "/usr/local/lib/python2.7/dist-packages/paramiko/transport.py", line 660, in start_client
        raise e
    TypeError: from_buffer() cannot return the address of the raw string within a str or unicode or bytearray object

![20201014120213873.png][]

## **原因分析：** ##

paramiko和cryptography以及cffi组件模块版本不匹配。

## **解决方法：** ##

先保证同时更新这三个组件模块：

pip install cffi -i https://pypi.douban.com/simple --trust -host=pypi.douban.com
    pip install --upgrade cryptography -i https://pypi.douban.com/simple --trust -host=pypi.douban.com
    pip install --upgrade paramiko -i https://pypi.douban.com/simple --trust -host=pypi.douban.com

**如果还是报错**，可能cffi在python路径中安装了cffi的多个副本。而默认用的是老的版本的cffi副本，可以执行如下操作解决：

pip uninstall cffi
    
    apt-get purge --auto-remove python-cffi
    
    pip install cffi -i https://pypi.douban.com/simple --trust -host=pypi.douban.com

至此，应该是可以成功了。

[20201014120213873.png]: /images/20221123/062a851968aa40229ebb5c34dc31e2ef.png