Windows下将Python3.8降级至3.7后，如何配置PyCharm解释器？

Hey there! Let's get your PyCharm interpreter set up with Python 3.7 smoothly. Here's a step-by-step guide to resolve this issue:

First, confirm Python 3.7 is properly recognized by your system:

• Open your terminal/command prompt and run python --version (Windows) or python3 --version (macOS/Linux). If it doesn't show Python 3.7, you'll need to add it to your system PATH:
  • Windows: Head to Control Panel > System > Advanced System Settings > Environment Variables. Under System Variables, find Path, click Edit, and add the paths to your Python 3.7 folder (usually C:\Python37) and its Scripts subfolder (C:\Python37\Scripts).
  • macOS/Linux: Edit your shell config file (like ~/.bashrc or ~/.zshrc) and add export PATH="/path/to/python37/bin:$PATH" (replace with your actual Python 3.7 install path). Run source ~/.bashrc (or the relevant file) to apply the change.

Next, configure the interpreter in PyCharm:

1. Open your project, then go to File > Settings (Windows/Linux) or PyCharm > Settings (macOS).
2. In the left sidebar, navigate to Project: [Your Project Name] > Python Interpreter.
3. Click the gear icon ⚙️ next to the interpreter dropdown, then select Add.
4. Choose System Interpreter from the left menu in the "Add Python Interpreter" window.
5. Click the three dots (...) next to the interpreter path field, then browse to your Python 3.7 executable (e.g., python.exe on Windows, python3.7 on macOS/Linux).
6. Select the executable, click OK, then apply the changes in the Settings window.

If PyCharm still doesn't detect Python 3.7:

• Restart PyCharm entirely—sometimes the IDE needs a fresh start to pick up system changes.
• In the "Add Python Interpreter" window, click the Refresh button (circular arrow) to force PyCharm to re-scan for new interpreters.
• Ensure you installed Python 3.7 in a non-restricted folder (avoid Program Files on Windows without admin rights). If you did, reinstall Python 3.7 to a simpler path like C:\Python37 with admin privileges.

Once the interpreter is set up, install your target wheel package:

• Open PyCharm's built-in terminal (bottom toolbar), then run pip install path/to/your/package.whl (replace with the actual file path of your downloaded .whl) to install it using the Python 3.7 interpreter.

内容的提问来源于stack exchange，提问作者Gabriel