I am a beginner in NodeJS. I have worked on some scripts in python which does some calculation on two csvs. Is there a easy way to migrate a python script to NodeJS? I don't know whether its a right way to do it. But I wanted to know is there any way for for it.
Any suggestions will be encouragable.
If you simply want to convert the code to javascript there are tools available like transcrypt which converts the python code to javascript.
Simple way : understand your code and rewrite it in node.js format.
If you're a beginner in node.js, it's a good exercise to understand how node.js works.
I recommand you this post which regroup a lot of ressources to begin node.js : How do I get started with Node.js
EDIT : you can also execute your Python script with a node.js process, and use the result in node.js.
Documentation : https://nodejs.org/api/process.html
Related
I have a web server which I have developed an application on using php and SQL, mainly picked php as I am more comfortable with it.
In short the application automates some of our network tasks .
As part of this I have automated some solarwinds tasks and the library orionsdk doesnt have a php library so I have used python.
It's all working fine but I really need to run these python scripts from my browser .
I have considered using php shell exec and got my python scripts to accept args so I can run them and parse the output.
I know I could also use flask or django but worry I will have a flask app to maintain aswell as a php app.
I think the question is what the best way to achieve this or any way which I haven't mentioned .
Any help would be very much appreciated
So you want PHP to communicate with Python and you've already mentioned using shell commands and http traffic.
I can imagine you could also achieve something similar by connecting up both PHP and Python up to the same database. In that case PHP could write a record in a table and Python could pick that up and do something with the data in there. Python could be either be a long-running process or fired off by a cronjob in this case. If a database seems overkill you could also write a file to some place on disk, which Python can pick up.
Personally I'd go for the shell exec approach if you want to keep it light weight and for a API connection if you want to have a more robust solution which needs to be expanded later on.
I’m an amateur coder working on a project right now, and I was wondering if you could help me.
Basically, I’ve been doing a lot of research on a particular algorithm that I find runs much faster using Python. The goal is to get this Python code to run in my IOS application. What I’ve found is that the Python interpreter has to be embedded with the Swift application in order to do this. However, I haven’t found much useful documentation or other sources on how to do this. Do you have any suggestions or advice?
This tutorial seems to be fairly clear and easy to follow, and cover the necessary steps. Is there any chance you could share what the algorithm in question is? It might make more sense to use C - it looks like you can mix Obj-C with Swift. That said, I am not confident that you can actually do this on iOS.
First of all, your app might not get through App Store review if it has an executable for Python in it. Apple has its own docs on embedding Python in OSX/Mac OS apps, but not for iOS.
Additionally, I don't think an official executable of Python for iOS even exists. The closest thing I could think of, or find, is Pythonista, but I believe the developer made their own version of Python for iOS.
It looks like you can export Pythonista code to stand-alone apps, although how useful this is, and weather or not you can do this for iOS, I don't know. Additionally, that feature only works with Python2. Hope this helps.
We using AngularJS as a frontend for our web application and some of the functions we are using python to do the calculation and get results back.
I would like to know is there any way to calling the python script directly in AngularJS? right now we are using $HTTP service to call PHP then in PHP using EXEC command to call the python, it is all working fine.
The problem is we notified there is about 5 seconds delay every time the python script call and I guess it is because of the overhead for the python interpreter and try to start it every time, we would like to eliminate that delay.
We are run on Redhat v 6.8 / AngualarJS 1.4x and Python 3.6 Anaconda3
Does anyone try something like that? any suggestions are welcome.
Thank you!
You could write a python method that calls your calculation code and expose that method as a REST API.
You would need a library like Flask.
This tutorial explains how to do that : https://www.codementor.io/sagaragarwal94/building-a-basic-restful-api-in-python-58k02xsiq
This way you can directly call the python API.
I want to consume the events/Signals exposed by the Application via .NET SignalR.
My requirement is to receive those signals using Python.
Kindly help me out.
A similar question was asked here:
Using SignalR server from Python code
There are no Python SignalR libraries available, so your only option would be to port a lightweight version of SignalR to python yourself. See https://github.com/davidfowl/SignalR.Lite
Obviously this is not a trivial undertaking!
I just wanted to offer another approach. Maybe the simpler solution would be to execute the SignalrR javascript library in python and just create a translational layer to get it back into python objects.
I do not have code proving this, but I was hoping this would encourage someone in the future to try it.
I have a website on my local server and I like to execute system commands on my local server with a button press in the html file that is displayed. Is there a way to either execute system commands like gpio write 0 1 or to run python scripts? And how can I get the output of a system command as a string, like /opt/vc/bin/vcgencmd measure_temp| egrep "[0-9.]{4,}" -o output e.g. 44.4?
Thanks
David
You will have to a webserver with some kind of server-side script. There's lots of ways you can do this. If you know PHP, that may be easiest. If you want to use python check out uwsgi.
Here is a pretty simple project I wrote with uwsgi that might help you get started if you go that route. I found a lot of the examples didn't help a lot, so you might have some luck with that code.
Edit: Actually, uwsgi on the pi is a pretty old version, and it does some weird things on ARM if you try to compile it.
I created a proof of concept for you here using gunicorn instead. Just follow the instructions under the Installing section.