在Google Colab中修改克隆的GitHub仓库文件后如何保存更改？

First: Why pip install click Didn't Work Locally #

It sounds like you ran into a common Python 2 vs Python 3 pip confusion! When you run just pip install click, it might have installed the package for Python 3 instead of your Python 2 environment. To fix this locally, use pip2 install click explicitly—this ensures the package gets installed into your Python 2 site-packages folder, so your script can find it.

Second: Saving Modified Files in Google Colab #

Colab runs on a temporary cloud VM, so any changes you make to files will disappear once your session ends. Here are three reliable ways to save your edits:

1. Download the file to your local computer

Use this Python 2 code snippet to trigger a download of your modified file:

from google.colab import files
files.download('filename.py')

A browser download prompt will pop up, and you can save the updated file to your C drive or any local folder.

2. Save to Google Drive

First, mount your Google Drive to the Colab VM:

from google.colab import drive
drive.mount('/content/drive')

You’ll be asked to authenticate with your Google account. Once mounted, copy the modified file to your Drive:

!cp filename.py /content/drive/MyDrive/your_custom_folder_name/

Replace your_custom_folder_name with a folder you’ve created in Drive—this way the file will persist across Colab sessions.

3. Push changes back to your GitHub repository

If you want to update the original repo directly, follow these steps:

1. Set your Git credentials (replace with your info):

   !git config --global user.name "Your GitHub Username"
   !git config --global user.email "your-github-email@example.com"
   

2. Stage your modified file:

   !git add filename.py
   

3. Commit the changes:

   !git commit -m "Update filename.py with my edits"
   

4. Push to GitHub—you’ll need a GitHub Personal Access Token (paste it when prompted, or include it in the remote URL):

   !git remote set-url origin https://<your-personal-access-token>@github.com/your-username/your-repo-name.git
   !git push origin main
   

   (Replace <your-personal-access-token>, your-username, and your-repo-name with your actual details.)

Quick Note About Python 2 in Colab #

Colab defaults to Python 3, so make sure you’re running your scripts in a Python 2 environment. You can either:

• Add %%python2 at the top of code cells that run your script, or
• Switch the default Python version for the session with:

  !sudo update-alternatives --install /usr/bin/python python /usr/bin/python2.7 1
  

内容的提问来源于stack exchange，提问作者amy