Question

如何使用Python远程读取NetCDF文件？

read a file from a server with ssh using Python很容易，但是如何用sftp_client.open()之类的命令将命令netCDF4.Dataset()替换为将结果存储到变量中？

在下面的示例中，我正在本地下载并暂时下载我想远程读取的文件：

import os
import paramiko
import netCDF4

remotefile = 'pathtoremotefile'
localfile = 'pathtolocaltmpfile'

ssh_client = paramiko.SSHClient()
ssh_client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
ssh_client.connect('myserver', username="myname", password="mypswd")

sftp_client = ssh_client.open_sftp()

# Something similar than this but for a NetCDF file? 
# Or how to use remote_file in netCDF4 afterwards?
# remote_file = sftp_client.open(remotefile)

# Here, I just download it to manipulate it locally...
sftp_client.get(remotefile, localfile)

try:
    ncfile = netCDF4.Dataset(localfile)
    # Operations...

finally:
    sftp_client.close()
    ssh_client.close()
    os.remove(localfile)

Answer 1

您可以使用sshfs在本地安装远程ssh并将其作为本地文件打开

import os
import netCDF4
localfile = 'pathtolocalmountpoint/relativepathtofile'
try:
  ncfile = netCDF4.Dataset(localfile)

使用netCDF4在Python中通过ssh读取远程NetCDF文件

1 个答案: