为什么我的 Python 程序不能上传我的文件？

Question

I have a simple script to upload an Excel file to an external sftp server using Python 3 and pysftp library ( https://pysftp.readthedocs.io/en/release_0.2.9/ ).

When I run it, I get aa vague error:

An error occurred Exception ignored in: <function Connection.__del__
at 0x0000014B03749EA0> Traceback (most recent call last):   File
"H:\Python310\lib\site-packages\pysftp\__init__.py", line 784, in
close
    if self._sftp_live: AttributeError: 'Connection' object has no attribute

Here is my little script:

import pysftp

try:
    with pysftp.Connection('xyz.edu', username='test', password='xyz') as sftp:

        with sftp.cd('/data'):
            sftp.put('/pycode/DataSpring.xlsx')
except:
    print("An error occurred")

else:
    print("File uploaded successfully")

I copied & pasted the server, username, and password into WinSCP and it worked fine.

The file path for both remote and local exist and the file does exist and is not locked or anything.

Is there something I missing?

Answer 1

Pysftp has known issues with handling the host key. You can find the solution to your problem in the answers to this post: Verify host key with pysftp