Python持续运行旧代码而非目标代码，求助解决问题

Hey there, let's work through this frustrating issue—there's nothing more annoying than putting time into updating code only to see the old version run over and over! Here are the most common fixes to try:

• Double-check your file is saved
  It sounds obvious, but it's easy to forget! Make sure you've clicked the save button in your editor or used the shortcut (Ctrl+S on Windows/Linux, Cmd+S on macOS) to confirm your changes are written to the file. Some editors have auto-save, but it never hurts to manually verify.

• Confirm you're running the right file
  Sometimes we end up with multiple copies of the same script (in different folders) or our terminal is pointing to the wrong directory.

  • In your terminal, run pwd (Linux/macOS) or cd with no arguments (Windows) to check your current working directory—does it match where your updated script lives?
  • If you're using an IDE like VS Code or PyCharm, double-check the run configuration to ensure it's targeting the correct file, not an old path.

• Delete Python's bytecode cache
  Python stores compiled bytecode in __pycache__ folders to speed up future runs. Sometimes these caches don't update when you change your code.

  • Find the __pycache__ folder in your script's directory and delete it entirely.
  • Alternatively, run your script with the -B flag to skip cache generation: python -B your_script.py

• Reload imported modules (if applicable)
  If your updated code is part of a module that's imported by another script, Python caches modules by default.

  • Restart your Python interpreter or terminal session completely.
  • If you're in an interactive shell, use importlib.reload(your_module) (you'll need to import importlib first) to force a fresh load of the module.

• Clear your IDE/editor cache
  Some editors keep their own caches that can cause outdated code to run.

  • For VS Code: Press Ctrl+Shift+P, search for "Python: Clear Workspace Cache" and run it.
  • For PyCharm: Go to File > Invalidate Caches..., check the relevant boxes, and restart the IDE.

• Verify your graphic file path
  Since you mentioned re-downloading graphic files, make sure your code is pointing to the correct file location. Double-check relative paths (are they relative to the script's directory, not your terminal's working directory?) or update absolute paths to point to the newly downloaded files.

Work through these steps one by one—chances are one of them will fix the issue!

内容的提问来源于stack exchange，提问作者Leila AZIMI