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Discover how to fix `FileNotFoundError` errors when using Paramiko with SFTP by changing directories effectively. Learn best practices for remote path management.
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This video is based on the question https://stackoverflow.com/q/63942528/ asked by the user 'TiredWater' ( https://stackoverflow.com/u/12918778/ ) and on the answer https://stackoverflow.com/a/63945038/ provided by the user 'pimpo' ( https://stackoverflow.com/u/3478652/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Resolving FileNotFoundError on SFTP with Paramiko: How to Change Directory Safely

When working with SFTP servers using Paramiko in Python, encountering errors can be frustrating, especially when you're transitioning from a development to a production environment. One common issue that many developers face is the dreaded FileNotFoundError: Errno 2 error, often stemming from incorrect directory paths. In this post, we will delve into how you can change directories on an SFTP server and how to work around these path issues effectively.

Understanding the Problem

In your scenario, you have successfully executed a script on your development server, but when moved to the production environment, you encounter the FileNotFoundError. Upon logging into your SFTP server, you noticed that the root directory is /root, while the target directory you need to access is /BackupStorage/Test/Here. This discrepancy is likely causing your script to fail because it is still trying to reference files from the root directory instead of the intended folder.

Let's discuss how you can resolve this issue by effectively changing directories on your SFTP server.

Solution: Changing Directory with Paramiko

Step 1: Establishing the Connection

Your first step as shown in the code involves connecting to the SFTP server. You start by creating a session using Paramiko's Transport class, followed by creating the SFTPClient. Here’s a refresher of that setup:

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Step 2: Changing Directory

The key to solving your issue lies in the ability to change to the correct directory. To do this, you can use the chdir method provided by the SFTP client. Here’s how you can implement this function in your existing script:

[[See Video to Reveal this Text or Code Snippet]]

Step 3: Using Absolute Paths

While changing directories is effective, using absolute paths when listing files or performing operations can help alleviate any confusion regarding the current working directory. In your existing loops, you can ensure that all paths are absolute:

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Step 4: Closing the Session

Always remember to close the SFTP session to leave the server clean and avoid any lingering connections. You can do this with a simple call:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

By applying these straightforward changes to your script, you should be able to successfully navigate to your desired directory on the SFTP server and eliminate those pesky FileNotFoundError issues. Always ensure you're using correct paths—whether absolute or relative—to avoid these errors in production environments. Happy coding!