来自Linux的Python pysftp get_r在Linux上工作正常，但在Windows上工作不正常 [英] Python pysftp get_r from Linux works fine on Linux but not on Windows

问题描述

我想使用Python 2.7将SFTP递归地使用文件和子文件夹将整个目录结构从Linux服务器复制到本地计算机(Windows和Linux).

I would like to copy an entire directory structure with files and subfolders recursively using SFTP from a Linux server to a local machine (both Windows and Linux)using Python 2.7.

我能够ping服务器并使用WinSCP从同一台计算机下载文件.

I am able to ping the server and download the files using WinSCP from the same machine.

我尝试了以下代码，但在Linux上运行良好，但在Windows上却无法运行.

I tried the following code, works fine on Linux but not on Windows.

我尝试了\，/，os.join，都给了我相同的错误，并检查了权限.

I tried \, /, os.join, all gives me same error, checked permissions as well.

import os
import pysftp

cnopts = pysftp.CnOpts()
cnopts.hostkeys = None    # disable host key checking.
sftp=pysftp.Connection('xxxx.xxx.com', username='xxx',password='xxx',cnopts=cnopts)
sftp.get_r('/abc/def/ghi/klm/mno', 'C:\pqr',preserve_mtime=False)

File "<stdin>", line 1, in <module> File "C:\Python27\lib\site-packages\pysftp_init_.py", line 311, in get_r preserve_mtime=preserve_mtime)
File "C:\Python27\lib\site-packages\pysftp_init_.py", line 249, in get self._sftp.get(remotepath, localpath, callback=callback)
File "C:\Python27\lib\site-packages\paramiko\sftp_client.py", line 769, in get with open(localpath, 'wb') as fl: IOError: [Errno 2] No such file or directory: u'C:\\pqr\\./abc/def/ghi/klm/mno/.nfs0000000615c569f500000004' 

推荐答案

实际上，pysftp get_r在Windows上不起作用.它为远程SFTP路径使用os.sep和os.path函数，这是错误的，因为SFTP路径始终使用正斜杠.

Indeed, pysftp get_r does not work on Windows. It uses os.sep and os.path functions for remote SFTP paths, what is wrong, as SFTP paths always use a forward slash.

但是您可以轻松实现便携式替换:

But you can easily implement a portable replacement:

import os
from stat import S_ISDIR, S_ISREG

def get_r_portable(sftp, remotedir, localdir, preserve_mtime=False):
    for entry in sftp.listdir_attr(remotedir):
        remotepath = remotedir + "/" + entry.filename
        localpath = os.path.join(localdir, entry.filename)
        mode = entry.st_mode
        if S_ISDIR(mode):
            try:
                os.mkdir(localpath)
            except OSError:     
                pass
            get_r_portable(sftp, remotepath, localpath, preserve_mtime)
        elif S_ISREG(mode):
            sftp.get(remotepath, localpath, preserve_mtime=preserve_mtime)

使用方式如下:

get_r_portable(sftp, '/abc/def/ghi/klm/mno', 'C:\\pqr', preserve_mtime=False) 

---

可能的代码修改:

---

Possible modifications of the code:

• 使用Python从SFTP服务器下载时不要下载空文件夹
• 使用Python从SFTP服务器下载超过5天的文件
• 如何仅使用pysftp同步远程目录中更改的文件?

• Do not download empty folders while downloading from SFTP server using Python
• Download files from SFTP server that are older than 5 days using Python
• How to sync only the changed files from the remote directory using pysftp?

有关put_r的类似问题，请参见:
Python pysftp put_r在Windows上不起作用

For a similar question about put_r, see:
Python pysftp put_r does not work on Windows

旁注:不要禁用主机密钥检查" .您正在免受 MITM攻击的保护.

Side note: Do not "disable host key checking". You are losing a protection against MITM attacks.

有关正确的解决方案，请参见使用pysftp验证主机密钥.

For a correct solution, see Verify host key with pysftp.

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