I created a Flask app that I would like to deploy on Heroku (or similar platform). The process I've followed in the past is to creating a 'requirements.txt' file with the packages from my venv and Heroku installs them in the virtual server. The issue I am having is that I have changed some of the code in the Flask library to get the app to work like I want. Is there some way to load local packages? Should I remove it from my venv/lib folder and add it to my main folder?
Thanks,
Marc
You can use git for that.
Please check this link. https://devcenter.heroku.com/articles/python-pip#local-file-backed-distributions
You would have to out the local library in the git repo and then update your requirements.txt file
Related
I have Django app, which I deployed on Heroku.
All the modules were deployed whith requirements.txt and everything is ok
But I also have several classes which are made as modules in separate .py files. On local machine these modules are in ...\Python\Python38-32\Lib\site-packages\modules\ folder
Now I need to upload these modules to Heroku. But I don't know how to do it. Is there any file manager program for windows, which allows to connect to heroku server and upload these /modules/ folder to the site-packages directory?
I've tried to find such a program, but couldn't find anything
Deploy the app
In this step you will deploy the app to Heroku.
Create an app on Heroku, which prepares Heroku to receive your source code:
$ heroku create
When you create an app, a git remote (called heroku) is also created and associated with your local git repository.
Heroku generates a random name (in this case serene-caverns-82714) for your app, or you can pass a parameter to specify your own app name.
Now deploy your code:
$ git push heroku master
The application is now deployed. Ensure that at least one instance of the app is running:
$ heroku ps:scale web=1
Now visit the app at the URL generated by its app name. As a handy shortcut, you can open the website as follows:
$ heroku open
I've recently deployed an application to Heroku. Due to the constraints of the file system I'm looking to replace two css files within a Flask Package upon the application starting.
My main goal is to take a file from the app directory (the file is part of the git repo) and use it to replace a python package file located in the site packages directory.
I've tried to run the following from the Heroku CLI but nothing seems to happen.
heroku run mv ./bootstrap.css ./.heroku/python/lib/python3.6/site-packages/flask_bootstrap/static/css/bootstrap.css
I've also tried to remove the files from the site packages directory using RM but again nothing happens.
Could you please let me know if standard unix commands work on Heroku?
Fork and edit flask_bootstrap and add that to requirements.txt file like this.
Heroku using ephemeral filesystem. Whatever change you made to your filesystem only last until the dyno is restarted.
So my opinion is to change the file in your local repo and push to heroku again.
Source : https://help.heroku.com/K1PPS2WM/why-are-my-file-uploads-missing-deleted
After I tried to deploy my Django website on Azure, I got an error saying:
ModuleNotFoundError: No module named 'django'
I added a requirements.txt in the root directory of my Django project, am I missing anything else? I've tried to install Django from Kudu BASH but it gets stuck on "Cleaning Up".
Here is the full error: https://pastebin.com/z5xxqM08
I built the site using Django-2.2 and Python 3.6.8.
Just summarized as an answer for other people. According to your error information, I can see that you tried to deploy your Django app to Azure WebApp on Linux based on Docker. So there are two offical documents will help as below.
Quickstart: Create a Python app in Azure App Service on Linux
Configure a Linux Python app for Azure App Service
The error ModuleNotFoundError: No module named 'django' indicated that there is not django package installed on the container of Azure Linux WebApp.
Due to the content of Container characteristics of #2 document above as below,
To install additional packages, such as Django, create a requirements.txt file in the root of your project using pip freeze > requirements.txt. Then, publish your project to App Service using Git deployment, which automatically runs pip install -r requirements.txt in the container to install your app's dependencies.
So the possible reason is the requirements.txt file not in the corrent path of your project or container after deployed, which path should be /home/site/wwwroot/requirements.txt on the container or the root of your project like the offical sample Azure-Samples/djangoapp on GitHub.
I had the same problem. requirements.txt was in my repository, but randomly I started getting the same error ModuleNotFoundError: No module named 'django' after changing a setting or restarting the service or something. Nothing I could do, change the setting, or reboot repeatedly fixed it. Finally what worked for me was this:
Make a small change to the code and commit it, and push it up to the app service.
This fixed it for me. It has happened a couple times now and every time this solution has worked for me. It seems like the App Service sometimes gets in this state and needs to be jostled with this trick?
I am trying to deploy a Flask app to an Azure Web App (Linux, python3.7 runtime) using FTP.
I copied the "application.py" over and a "requirements.txt", but I can see in the logs that nothing is being installed.
The Web App is using an 'antenv' virtual environment but it won't install anything. How do I add libraries to this 'antenv' virtual environment?
Yes, I see that you have resolved the issue. You must use Git to deploy Python apps to App Service on Linux so that your dependencies in requirements.txt are installed (root folder).
To install Django and any other dependencies, you must provide a requirements.txt file and deploy to App Service using Git.
The antenv folder is where App Service creates a virtual environment with your dependencies. If you expand this node, you can verify that the packages you named in requirements.txt are installed in antenv/lib/python3.7/site-packages. Refer this document for more details.
Additionally, Although the container can run Django and Flask apps automatically, provided the app matches an expected structure, you can also provide a custom startup command file through which you have full control over the Gunicorn command line. A custom startup command is typically required for Flask apps, but not Django apps.
Turns out I had to run these commands and do a git push while my local venv was activated. At that point I saw azure start downloading all the libraries in my requirements.txt
My Python app needs web.py to run but I'm unable to figure out how to get it up to bluemix. I see no options using cf push. I tried to "import web" and added some additional code to my app without success.
When I push my Python app to bluemix without web.py it fails (naturally) since it does not have what it needs to run.
I'm sure I'm just missing an import mechanism. Any help?
I recommend that you try out this starter template on GitHub. It is enabled with a deploy to Bluemix button that automatically creates a python runtime and postgress database with Django installed. https://github.com/fe01134/djangobluemix
The project includes the requirements.txt file to ensure you have the right dependencies and also the .settings file to read the database user id and password from VCAP Services. It also leverages Declared services in the manifest file to create a database service for you.
Here is a YouTube Tutorial on how to deploy Python app on Bluemix https://www.youtube.com/watch?v=qIcHQQNUmlE&list=PLvsG7O_a5F2dAjsNp6aRACP6vkqdgsZ33&index=5
The cause for this problem was that I was not correctly telling my Python app the needed configuration information when I pushed it out to Bluemix.
What I ended up having to do was add a requirements.txt file and a Procfile file into the root directory of my Python application, to draw that connection between my Python app and the needed libraries/packages.
In the requirements.txt file I specified the library packages needed by my Python app. These are the file contents:
web.py==0.37
wsgiref==0.1.2
where web.py==0.37 is the version of the web.py library that will be downloaded, and wsgiref==0.1.2 is the version of the web server gateway interface that is needed by the version of web.py I am using.
My Procfile contains the following information:
web: python .py $PORT
where myappname is the name of my Python app, and $PORT is the port number that my Python app uses to receive requests.
I found out too that $PORT is optional because when I did not specify $PORT my app ran with the port number under the VCAP_APP_PORT environment variable for my app.
From there it was just a matter of pushing my app out to Bluemix again only this time it ran fine.
just use pip freeze
pip freeze > requirements.txt
add the requirements.txt to your project
when deployed it will automaticly install the dependency