Posted by What’s the point of building a fancy web app if you can’t show off your dashboard/model to the world? 🌎 In this tutorial, we will deploy a Streamlit app using Heroku
Things you will need
- Heroku Account
- Github Account
- A Streamlit app you want to deploy, I will be deploying this app. If you are want to learn how to build a streamlit app to scrape Github, check out my previous article
Files needed
Requirements.txt
pip freeze > requirements.txt
The above command lists down all the libraries your app uses in a text file. Make sure your virtual environment is activated before you type the above command.
Procfile
web: sh setup.sh && streamlit run app.py
Create a file and name it ‘Procfile’. Make sure it has no extension and its name is set to ‘Procfile’. Inside the file, paste the above content. If your app.py is inside a folder app, it should be ‘ streamlit run app/app.py’
setup.sh
mkdir -p ~/.streamlit/
echo "\
[general]\n\
email = \"{your_email_id}\"\n\
" > ~/.streamlit/credentials.toml
echo "\ [server]\n\ headless = true\n\ enableCORS=false\n\port = $PORT\n\ " > ~/.streamlit/config.toml
Create a file and name it ‘setup.sh’ Copy the above content and paste it in the file. Make sure you replace your email id.
Once you have created all the files, upload your app along with the files to Github
Heroku
Click on New > Create new app
In the next screen chose a name for your app and chose the region
Click on create app once you’re done.
On the next screen, select your deploy method as Github. Search for your GitHub repo and connect to it.
After you successfully connect your repo, you should be able to scroll down and see an option called “Manual Deploy”
You can choose Automatic Deploy as well, the master branch will be deployed automatically whenever changes are made. For this tutorial, we will use Manual Deploy.
Click on Deploy Branch and wait for the process to complete.
Once the build is complete, you should see a success message.
Click on view to see your app live
Congratulations 👏 👏
If there is a build error due to a version of a library not being found, manually update the version in requirements.txt with the latest version shown in the build error message. This may cause some functionalities of your app to not work but it’s worth a try.