There are several possible causes of exit code 9009, so structured troubleshooting is required. Follow these systematic steps:
1. Check Python Installation
First, verify Python is properly installed and the interpreter executable functions normally.
- Open a command prompt/terminal and run
- If it displays Python’s version, then basic installation is OK.
- If it shows “command not found” or a similar error, Python is not correctly set up.
Reinstalling Python may be required if it’s missing entirely or critical files got corrupted.
2. Test with Simple Scripts
Create a simple Python script like:
Try running it from the command prompt:
If this basic script also produces exit code 9009, it indicates a core Python issue. If it works, then the problem likely lies in your original script’s dependencies and environment.
3. Validate Environment Variables
On Windows, check that these environment variables are set correctly:
PATH – Contains path to Python’s install directory.
PYTHONPATH – Set to Python’s
Errors in these variables prevent Python from working properly. They can get corrupted or deleted.
On Linux/macOS, the variables differ but verify Python install paths are in
4. Inspect Dependency Versions
If your script uses third-party packages and libraries, version mismatches may cause Python to crash on launch.
- Dependent packages are installed for the correct Python version (2.x vs 3.x).
- Package versions are compatible with each other.
- Virtual environments are activated when running the script.
Updating and aligning dependencies can fix conflicts and issues.
5. Disable Antivirus or Firewall Software
Overzealous antivirus or firewall tools may block Python from launching properly. As a test:
- Add Python’s directories to antivirus exclusions.
- Whitelist Python through Windows Firewall or other security software.
- Temporarily disable security software entirely and retest.
If Python then works, tweaking security configurations is needed for compatibility.
6. Use Debugger to Pinpoint Issue
More advanced users can use a debugger for insights into where specifically Python is crashing:
- Launch Python with a debugger like
python -m pdb myscript.py.
- Step through code line-by-line until error occurs.
- Examine stack traces and variables at time of crash.
Debugger output can reveal the problematic function, module, or line of code.
7. Reinstall Python Interpreter
If no other issues are found, reinstalling Python itself may be required as a last resort:
- On Windows, run the Python installer again and select Repair or Uninstall then Reinstall.
- On Linux, fully remove old Python versions then install fresh packages.
- After reinstalling, retry running Python scripts.
This should reset Python to a clean working state if environmental issues were present.
Following this rigorous troubleshooting approach should uncover the root cause so it can be corrected.