👀 Views: 0 💬 Answers: 1 📅 Created: 2025-06-18

linux python tempfile Python

I've encountered a strange issue with I'm learning this framework and I'm prototyping a solution and I'm stuck on something that should probably be simple... I'm currently working with an scenario where my Python application, which processes log files in real-time, crashes when it tries to create temporary files in the `/tmp` directory on Fedora 36. The application uses the `tempfile` module to manage temporary files. Here’s a snippet of the relevant code: ```python import tempfile def process_logs(log_file): with open(log_file, 'r') as f: for line in f: # Simulate processing the log and creating a temp file with tempfile.NamedTemporaryFile(delete=True) as temp: temp.write(line.encode('utf-8')) # Further processing... ``` I have checked the permissions on `/tmp`, and they seem correct: ```bash ls -ld /tmp ``` This returns: ``` drwxrwxrwt. 10 root root 4096 Sep 30 12:00 /tmp ``` However, I keep getting the following behavior: ``` FileNotFoundError: [Errno 2] No such file or directory: '/tmp/tmpxxxxxx' ``` What’s puzzling is that sometimes it works fine, but it fails intermittently, leading to crashes in my log processing application. I’ve tried manually creating files in `/tmp` using `touch` and confirmed that I can write to it. I also checked if there were any SELinux policies that might be causing issues, but running `sestatus` shows that SELinux is in permissive mode: ``` SELinux status: permissive ``` I even added some logging to capture the specific moments before the crash, but it doesn’t seem to provide any clue as to why the temporary file is not created. Has anyone else encountered a similar scenario or can provide insights into what might be going wrong? This issue appeared after updating to Python 3.10. Any advice would be much appreciated. I'm open to any suggestions.