安装NVIDIA及CUDA驱动后Python3.5报_tkinter模块缺失错误

Hey Jonny, let's work through this _tkinter error you're hitting with Python 3.5 after setting up NVIDIA and CUDA drivers. Since you noted python3-tk is already up-to-date and Python 3.6 is installed alongside, the issue is likely tied to Python 3.5's tkinter association or environment interference from CUDA. Here are actionable steps to fix this:

• First, confirm your Python 3.5 installation's tkinter status
  Run these commands to narrow down if the problem is specific to your Python 3.5 build:

  # Get the full path of your Python 3.5 executable
  which python3.5
  # Test if tkinter loads with this Python version
  python3.5 -c "import tkinter; print(tkinter.__file__)"
  

  If this throws the same error, your Python 3.5's tkinter module is either missing or broken—note that the default python3-tk package is often linked to your system's primary Python version (which is 3.6 in your case).

• Install Python 3.5-specific tkinter package
  On Ubuntu/Debian systems, version-specific tkinter packages exist for alternative Python releases. Try installing the one for Python 3.5:

  sudo apt-get install python3.5-tk
  

  If you get a "package not found" error, add the deadsnakes PPA (which maintains older Python versions) first:

  sudo add-apt-repository ppa:deadsnakes/ppa
  sudo apt-get update
  sudo apt-get install python3.5-tk
  

• Check if CUDA's environment variables are breaking dependencies
  CUDA installation often modifies LD_LIBRARY_PATH, which can override system libraries that tkinter relies on. Test this by temporarily unsetting the variable:

  unset LD_LIBRARY_PATH && python3.5 -c "import tkinter"
  

  If this works, adjust your environment to prioritize system libraries. Edit your ~/.bashrc or ~/.profile file and add this line (ensuring system paths come first):

  export LD_LIBRARY_PATH=/usr/lib/x86_64-linux-gnu/:$LD_LIBRARY_PATH
  

  Reload your profile with source ~/.bashrc to apply the change.

• Reinstall Python 3.5 and its tkinter module
  If corruption is the issue, reinstall Python 3.5 to fix broken files:

  sudo apt-get reinstall python3.5 python3.5-tk
  

  If you compiled Python 3.5 from source originally, recompile it with tkinter support. First install required dependencies:

  sudo apt-get install tk-dev tcl-dev
  

  Then re-run the configure step with tk/tcl flags before compiling:

  ./configure --with-tk --with-tcl
  make && sudo make install
  

• Verify virtual environment settings
  If you're using a virtual environment for Python 3.5, it might be isolated from system-wide tkinter. Create a new environment with system site-packages enabled to test:

  python3.5 -m venv --system-site-packages my_fixed_env
  source my_fixed_env/bin/activate
  python -c "import tkinter"
  

  If this works, you can either switch to this environment or copy the tkinter files from your system Python 3.5's site-packages to your existing virtual environment.

内容的提问来源于stack exchange，提问作者Jonny