I have develop python flask application(REST API). Now I want to deploy this application on client system(Windows 10 Professional ). My client dont have any internet service.
Previously, I done in java that time I make a .war file and deployed in tomcat on client system. He was able to access REST API.
Now I want know any similar way to deploy python app on client system, on start system his able to access my REST API
use PyInstaller.
pip install pyinstaller
go to project dir
cd C:\Users\sandip\Desktop\MyPython
use
pyinstaller --onefile HelloFlask.py
If you just want to make your rest APIs accessible by other users in same network, you can simply do it without installing anything on client side by replacing the app.run() in your code to app.run(host= '0.0.0.0'). By default flask app runs on localhost, by changing it to latter causes it to run on your machines IP address, thus making it accessible by all the users under same network. You can read more on flask's documentation under the heading Externally Visible Server.
To deploy your app in production, you need a WSGI server, you can read about deployment of flask app here
Related
I have written a Python Dash Application and it works completely fine on my local computer. Now, I want to be able to deploy this application on a server within the corporate network. I do NOT want to deploy this on Heroku etc because the datasource is an internal API. How do I go about deploying this application on the server? It's a Linux based machine.
I found this post that says use the code below but not quite sure where to add this piece of code.
waitress-serve --host=0.0.0.0 --port=8080 appname:app.server
The code you are referring to, waitress-serve, is a command-line wrapper bound to the function waitress.serve provided by Waitress.
You run it in your terminal or from a shell script.
Waitress is a production-quality pure-Python WSGI server with very acceptable performance. It has no dependencies except ones which live in the Python standard library. It runs on CPython on Unix and Windows under Python 3.7+.
You can install it with pip install waitress.
#see waitress-serve documentation here.
I am building a back end in python via the python flask application from IBM Cloud/Bluemix. I have heard/read a lot about people complaining regarding that Flasks built in server isn’t good for production. But how do I know if the application uses the Flask built in server or if IBM sets something else? Is there a simple way to see this in the code?
Deploying the Flask boilerplate app from the IBM cloud catalogue will indeed deploy a Flask application running on the Flask dev webserver.
You will need to alter the application if you want to run a production WSGI server.
I work for IBM and am in this stuff all day every day.
If you want to verify this, SSH into your application container on Cloud Foundry with the bash command
cf ssh <yourappnamehere>
You will need to have either the bluemix or cloud foundry CLIs installed and be logged in to the relevant endpoint before submitting this command.
It will open a bash shell in your application container, and you can cd around and open and/or download your project files for inspection.
This line:
app = Flask(__name__)
is a sure fire way to know that you are running a Flask web server application.
If you are concerned with which WSGI server your application is running under, checking your procfile (you should see this when SSHing int your container) will show you which command starts your application. If the command is
python <yourapp>.py
then you are running the dev server. Otherwise, you would be running some other python file, most likely via the server's command rather than the python command, that would import your application as a dependency.
You can also take a look at whether or not any WSGI server libraries were downloaded during the compilation of your droplet, and what command was used to start your application with
cf logs <yourappname> --recent
after deploying it.
Or, you can just believe me that the boilerplate deploys a Flask app under a Flask dev server.
A tutorial on running Flask on a different WSGI server:
https://www.digitalocean.com/community/tutorials/how-to-serve-flask-applications-with-uwsgi-and-nginx-on-ubuntu-14-04
I built a small web app for a friend. That friend's computer will not be connected to the Internet when using the app, so deploying it on Heroku is not an option.
Is there a way to deploy it locally without having to install a complex web server? Something small that can be packaged with the application? Using the built-in Flask server seems to be discouraged when you go to "production", but for a local app is it ok?
If it's just going to be used offline by one person, then yes, the internal development server might be sufficient.
If you're looking for a simple way to send that app to her, then see pyinstaller:
pip install pyinstaller
pyinstaller your_app.py
Zip up the folder inside the new dist directory and pass that along.
If pyinstaller isn't for you, there are plenty of options.
If you're just running the app locally, it should be fine. The main issues with the dev server are security and performance, but for an app that's not exposed to the outside and that has a single user, it should work fine. Even though you're using the dev server, it's still a good idea to turn off debug mode and enable multiprocess mode.
from multiprocessing import cpu_count
app.run(debug=False, processes=cpu_count())
If you want a little more performance, consider using uwsgi or gunicorn. Both are good WSGI app servers that can be installed with pip along with your application.
gunicorn -w $(nproc) --threads 2 --max-requests 10 myproject:app
I have downloaded and installed python on my PC. I am learning python at this moment so I am a beginner.
Is there anyway I could execute python scripts in localhost (Apache) and view them in a web browser as we do with PHP? I am executing the python scripts from CLI at this moment.
Although there are multiple solutions, I would take a look at mod_python. Unfortunately, in my experience it is not the easiest thing in the world to set up and requires making changes to httpd.conf, but this tutorial is helpful (and gives some examples).
Google App Engine SDK for Python includes a local web server application that simulates the App Engine environment. It allows for instant server script changes by just saving the file and refreshing the browser.
The development tutorial is here
Once you have your web site working locally, it is easy to deploy it live on Google's App Engine servers.
I've downloaded google_appengine version 1.3.1. Using some web tutorials, I've created basic django 1.1.1 application. Using appcfg I managed to deploy it on GAE and it works. The problem is, that application doesn't want to work on dev_appengine.py developement server.
Whenever I run the app GAE local server is returning HTTP 200 without any content. If I set basic environement and run main.py manually, then the page is properly returned on stdout.
I've also created very basic helloworld application, and this one is working ok on the devel server.
Do you have any idea, how can I debug the devel server? Option -d doesn't give any usefull insight at all.
I had module nammed same way as the default GAE launcher (main/ and main.py). After renaming the launcher everything works great.