{"id":336,"date":"2023-01-19T11:15:59","date_gmt":"2023-01-19T11:15:59","guid":{"rendered":"https:\/\/hostup.se\/en\/blog\/?p=336"},"modified":"2023-02-15T13:52:58","modified_gmt":"2023-02-15T13:52:58","slug":"setup-python-flask-application","status":"publish","type":"post","link":"https:\/\/hostup.se\/en\/blog\/setup-python-flask-application\/","title":{"rendered":"How to setup Python flask application on shared hosting"},"content":{"rendered":"\n

In this tutorial I will show you how to setup a Python Flask application that starts by passenger<\/p>\n\n\n\n

Step 1: Create a place to house your files & set correct document root<\/h2>\n\n\n\n

If you want you can use your main domain. However in this case I will use a subdomain where I will run my application.<\/p>\n\n\n\n

First Navigate to Web > Subdomains<\/strong> and enter the subdomain of your preference.<\/p>\n\n\n\n

\"\"
In this case my subdomain is python and my maindomain is flask.3li.se<\/figcaption><\/figure>\n\n\n\n

For the next step we’ll want to head on over to the terminal. You may access it via Dev > Terminal<\/strong> or via SSH by using the login details sent to you in the “Get started with your web host” email.<\/p>\n\n\n\n

Once there we’ll first create the correct document root.<\/p>\n\n\n\n

mkdir \/var\/www\/python.flask.3li.se<\/strong>\/public<\/pre>\n\n\n\n
Make sure to replace python.flask.3li.se with the subdomain that you created<\/p>\n\n\n\n
Next we’ll go back to the control panel and update the document root to reflect the change. Navigate to Web > Subdomains<\/strong> again and in the top left corner click Change Mode: List Subdomains<\/strong><\/p>\n\n\n\n
From there change the document root to the \/public directory you just created like so<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
Step 2: install a python version of your choice<\/h2>\n\n\n\n
From now on we’ll only work in the terminal.<\/p>\n\n\n\n
First find out what python version you’d like to use. In my case I chose 3.10<\/strong> but you can choose any version you like.<\/p>\n\n\n\n
Run the following command to install the python version<\/p>\n\n\n\n
pyenv install 3.10<\/strong><\/pre>\n\n\n\n
It can take a few minutes for it to compile and install python.<\/p>\n\n\n\n
Step 3: create all the necessary files.<\/h2>\n\n\n\n
First navigate one level below the document root of your site.<\/p>\n\n\n\n
cd \/var\/www\/python.flask.3li.se<\/strong><\/pre>\n\n\n\n
Next specify the python version you’d like to use<\/p>\n\n\n\n
pyenv local 3.10<\/pre>\n\n\n\n
Step 4: Install flask and create the passenger file<\/h2>\n\n\n\n
To install flask run the following command<\/p>\n\n\n\n
pip3 install flask<\/pre>\n\n\n\n
Create a Passenger startup file to run Flask as a Python WSGI application: <\/p>\n\n\n\n
touch passenger_wsgi.py<\/pre>\n\n\n\n
Edit the file with the editor of your choice and make sure it has the following content:<\/p>\n\n\n\n
from flask import Flask\n<\/span>application = Flask(__name__)\n<\/span> \n<\/span>@application.route(\"\/\")\n<\/span>def hello():\n<\/span> return \"Hello World!\"\n<\/span>\n<\/span>if __name__ == \"__main__\":\n<\/span> application.run()<\/code><\/pre>\n\n\n\n
Step 5: Create the .htaccess file to start passenger<\/h2>\n\n\n\n
The last thing to do is to create the .htaccess file that will start passenger.<\/p>\n\n\n\n
First navigate to your document root and create a file called .htaccess<\/p>\n\n\n\n
cd \/var\/www\/python.flask.3li.se<\/strong>\/public && touch .htaccess<\/pre>\n\n\n\n
Next edit the file with the editor of your choice and make sure it has the following content:<\/p>\n\n\n\n
PassengerAppRoot \/var\/www\/python.flask.3li.se<\/strong>\nPassengerPython \/usr\/local\/share\/python\/pyenv\/shims\/python\nPassengerEnabled on<\/code><\/pre>\n\n\n\n
Remember to replace python.flask.3li.se with your subdomain.<\/p>\n\n\n\n
The last thing to do is delete the template index.html file that was generated.<\/p>\n\n\n\n
rm \/var\/www\/python.flask.3li.se<\/strong>\/public\/index.html<\/pre>\n\n\n\n
That’s it. We’re done. You can now visit your site and you should see Hello World!<\/p>\n","protected":false},"excerpt":{"rendered":"
In this tutorial I will show you how to setup a Python Flask application that starts by passenger Step 1: Create a place to house your files & set correct document root If you want you can use your main domain. However in this case I will use a subdomain where I will run my […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-336","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/hostup.se\/en\/blog\/wp-json\/wp\/v2\/posts\/336","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hostup.se\/en\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hostup.se\/en\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hostup.se\/en\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hostup.se\/en\/blog\/wp-json\/wp\/v2\/comments?post=336"}],"version-history":[{"count":8,"href":"https:\/\/hostup.se\/en\/blog\/wp-json\/wp\/v2\/posts\/336\/revisions"}],"predecessor-version":[{"id":361,"href":"https:\/\/hostup.se\/en\/blog\/wp-json\/wp\/v2\/posts\/336\/revisions\/361"}],"wp:attachment":[{"href":"https:\/\/hostup.se\/en\/blog\/wp-json\/wp\/v2\/media?parent=336"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hostup.se\/en\/blog\/wp-json\/wp\/v2\/categories?post=336"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hostup.se\/en\/blog\/wp-json\/wp\/v2\/tags?post=336"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}