[python] heroku - selenium

 

Step 1: Set Up Your Code

Add the following lines to your code before you use Selenium.

from selenium import webdriver
import os

chrome_options = webdriver.ChromeOptions()
chrome_options.binary_location = os.environ.get("GOOGLE_CHROME_BIN")
chrome_options.add_argument("--headless")
chrome_options.add_argument("--disable-dev-shm-usage")
chrome_options.add_argument("--no-sandbox")
driver = webdriver.Chrome(executable_path=os.environ.get("CHROMEDRIVER_PATH"), chrome_options=chrome_options)

# Now you can start using Selenium

Step 2: Add the Buildpacks

On Heroku, open your App. Click on the Settings tab and scroll down to Buildpacks. Add the following:

• Python (Select it from the officially supported buildpacks)
• Headless Google Chrome: https://github.com/heroku/heroku-buildpack-google-chrome
• Chromedriver: https://github.com/heroku/heroku-buildpack-chromedriver

Step 3: Add the Config Vars

Scroll to the config vars section. Here, we will add the paths to Chrome and the Chromedriver. Add the following config vars:

• CHROMEDRIVER_PATH = /app/.chromedriver/bin/chromedriver
• GOOGLE_CHROME_BIN = /app/.apt/usr/bin/google-chrome

Step 4: Deploy the Application

If everything worked out correctly, then your application should be ready to deploy!

https://www.andressevilla.com/running-chromedriver-with-python-selenium-on-heroku/

How to Publish your API on Heroku

1. Install Heroku

First, we’ll need to register for a Heroku account and install the Heroku Command Line Interface (CLI) with the following command (works with Ubuntu 16+):

sudo snap install heroku --classic

Then log in to the Heroku CLI:

heroku login

2. Add the Necessary Files

Now, let’s add the necessary files for publication to the folder within our app:

• requirements.txt with a list of necessary Python modules
• Procfile, which explicitly declares what commands should be executed to start our app
• .gitignore, to exclude files we don’t need on the server

Our requirements.txt file will contain the following lines:

flask

flask-restful

gunicorn

Please note that we have added gunicorn (Python WSGI HTTP Server) to our list, since it is necessary to run our app on the server.

Procfile will contain:

web: gunicorn app:app

and .gitignore will contain the following:

*.pyc

__pycache__/

Now that we’ve created the necessary files, let’s initialize a git repository and commit:

git init

git add .

git commit -m "First API commit"

3. Create a new Heroku application

heroku create

And then finally push our master branch to the Heroku remote repository:

git push heroku master

Now we can start and open our API Service using the commands:

heroku ps:scale web=1

heroku open

Our API will now be accessible at: https://your-random-heroku-name.herokuapp.com/ai-quotes/