无管理员权限下在Windows 7使用GitHub的FOSS Python库的方案咨询

Hey there, let's work through this problem together—since you're stuck without admin rights on Windows 7 and need libraries like NumPy, xlrd, and xlwt up and running fast (with that two-week deadline), here are three solid, installer-free methods to get them fully functional:

Python has a built-in user-specific directory for installing libraries that doesn't require admin permissions. Here's how to use it:

• Open a command prompt and run this command to install the libraries directly to your user space:

  python -m pip install --user numpy xlrd xlwt
  

  If your pip isn't in your system PATH, using python -m pip ensures you're using the pip associated with your current Python installation.
• Verify the installation worked by running:

  python -c "import numpy, xlrd, xlwt; print('All libraries loaded successfully!')"
  

• The libraries will be installed to a path like C:\Users\<YourUsername>\AppData\Roaming\Python\PythonXX\site-packages—Python automatically checks this directory for libraries, so no extra setup is needed.

If pip is giving you trouble (e.g., network restrictions), you can grab precompiled wheel files and use them directly:

• Find the wheel file for each library that matches your Python version and Windows architecture (e.g., numpy-1.21.6-cp39-none-win_amd64.whl for Python 3.9 64-bit—note: Windows 7 only supports Python 3.9 and earlier).
• Rename the .whl file to a .zip extension and extract it using Windows' built-in zip tool. You'll get a folder with the library's core files (e.g., a numpy folder).
• Create a dedicated folder for your custom libraries, like C:\Users\<YourUsername>\CustomPythonLibs, and move all the extracted library folders into it.
• Tell Python where to find these libraries by either:
  • Adding the folder to your user's PYTHONPATH environment variable (you can edit user environment variables without admin rights via Control Panel > System > Advanced System Settings > Environment Variables > User Variables).
  • Or adding this line at the top of your Python scripts before importing the libraries:

    import sys
    sys.path.append(r'C:\Users\<YourUsername>\CustomPythonLibs')
    

• Test the setup with the same import command as before to confirm everything works.

Virtual environments let you create an isolated Python environment in your user directory, no admin rights required:

• Create a virtual environment by running:

  python -m venv my_work_env
  

  This will create a my_work_env folder in your current directory (make sure it's a path you have write access to, like your Documents folder).
• Activate the virtual environment:

  my_work_env\Scripts\activate.bat
  

  You'll see (my_work_env) at the start of your command prompt, indicating you're in the isolated environment.
• Now install your libraries normally with pip—since the environment is user-owned, no admin rights are needed:

  pip install numpy xlrd xlwt
  

• Every time you work on your project, just activate the virtual environment first, and all your libraries will be available.

Quick Tips to Avoid Headaches #

• If your pip is outdated, upgrade it first using the user site method: python -m pip install --user --upgrade pip—this fixes most installation compatibility issues.
• Double-check that your Python version is compatible with the library versions you're installing (e.g., NumPy 1.21.x supports Python 3.7–3.9, which are the last versions compatible with Windows 7).
• If you run into import errors, print your Python path with python -c "import sys; print(sys.path)" to make sure your library directory is listed.

内容的提问来源于stack exchange，提问作者rmutalik