部署Django应用到Heroku时遇ModuleNotFoundError：找不到rest_framework

Hey there, let's get this sorted out! The issue you're hitting is super common when deploying Django apps to Heroku—Heroku relies entirely on your requirements.txt file to install all the Python packages your app needs, and it looks like djangorestframework isn't listed there (or the file wasn't properly committed to git).

Here's exactly what to do to fix it:

• Step 1: Update your requirements.txt with the missing dependency
  Open your local project terminal and run this command to ensure all your installed packages (including djangorestframework) are added to the file:

  pip freeze > requirements.txt
  

  If you prefer to specify a specific version manually, you can add this line directly to the file:

  djangorestframework==3.14.0  # Replace with the version you're using locally
  

• Step 2: Commit the updated requirements.txt to git
  Heroku only uses files that are tracked in your git repository, so stage and commit the changes:

  git add requirements.txt
  git commit -m "Add djangorestframework to requirements for Heroku deployment"
  

• Step 3: Push to Heroku again
  Now re-run your push command, and Heroku should install the missing package during the build process:

  git push heroku master
  

If you still run into issues: #

If the error persists even after adding the dependency, it might be due to cached build assets on Heroku. Clear the cache with this command, then push again:

heroku builds:cache:purge

Your original push log for reference:

$ git push heroku master
Counting objects: 8, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (8/8), done.
Writing objects: 100% (8/8), 704 bytes | 704.00 KiB/s, done.
Total 8 (delta 6), reused 0 (delta 0)
remote: Compressing source files... done.
remote: Building source:
remote:
remote: -----> Python app detected
remote: -----> Installing pip
remote: Skipping installation, as Pi...
(Followed by ModuleNotFoundError: No module named 'rest_framework')

内容的提问来源于stack exchange，提问作者C. Joseph