Develop Reference

Use Pdftron library

I trying to use Pdftron api in my python project but I can't add library in the project.
I read all document in pdftron site for python in the end I can't.
please help.

Currently you have to build your own Python3 bindings. Following this guide, it typically takes ~15 minutes to generate your bindings.
https://github.com/PDFTron/PDFNetWrappers#linux
Once created, you can look at our any of our Python samples to see how to load PDFNet.
https://github.com/PDFTron/PDFNetWrappers/tree/master/Samples/AddImageTest/PYTHON
https://github.com/PDFTron/PDFNetWrappers/blob/master/Samples/AddImageTest/PYTHON/RunTest.sh
https://github.com/PDFTron/PDFNetWrappers/blob/master/Samples/AddImageTest/PYTHON/AddImageTest.py

Making a standalone python script that can be run by another software

I am currently interning at a place where they've asked me to make a standalone python program to do something (say X).
Now, that program is to be run by some commands sent by their proprietary software which is written in their proprietary language. Now the reason I'm saying proprietary so many times is because they aren't ready to take me anywhere near their code. I am just supposed to make a Python code that does X based on the input given by their software.
So is there a way I can make an API and wrap it around my code so as to let the software control it? Also I need to make the whole thing standalone (maybe an installer of some kind) so that they don't have to install Python and the accompanying modules (like opencv) just to run my script?
All I could get out of them was "there are dll files that will be calling your app and we want an executable"

Any programm can execute any other program (if it has the appropriate rights) so there is no real distinction between "python file" and "python executable" (that is because python is an interpreted language. The python source files and the "final python program" are "identical" (asuming cpython), in contrast to e.g. a C program where the source files and the executable are vastly different).
If you are on windows there is the additional problem that the user must have installed python to execute .py files. There are some ways to mitigate that problem - there are python libraries that "freeze" the python interpreter and your code into a single .exe file (from the comment by Bakuriu see e.g. freeze) . You could bundle the python interpreter with your code. You can just say your users to install python (if the amount of users is low that might be the good way).
"API" is just a fancy way of saying "this is how you communicate with my programm". This might be how you call a library (e.g. what functions a python module exports) or this might be an HTTP API or which command line arguments are passed or which protocoll over an TCP socket is spoken. Without knowing which API you are supposed to implement you cannot fulfill your job.
Without knowing further specifications (what inputdoes the other program give to yours, how does it call your programm?) it's very hard to say anything more helpful.

MATLAB to web app

Hi I have a MATLAB function that graphs the trajectory of different divers (the Olympic sport diving) depending on the position of a slider at the bottom of the window. The file takes multiple .mat files (with trajectory information in 3 dimensions) as input. I am trying to put this MATLAB app on to the internet. What would be the easiest/most efficient way of doing this? I have experience programming in Python and little experience programming in Java.
Here are the options that I have considered:
1. MATLAB Builder JA (too expensive)
2. Rewrite entire MATLAB function into Java (not experienced enough in Java)
3. Implement MATLAB file using mlabwrapper and using Django to deploy into web app. (having a lot of trouble installing mlabwrapper onto OSX)
4. Rewrite MATLAB function into Python using SciPy, NumPy, and matlibplot and then using Django.
I do not have any experience with Django but I am willing to learn it. Can someone point me in the right direction?

A cheap and somewhat easy way (with limited functionality) would be:
Install MATLAB on your server, or use the MATLAB Compiler to create a stand alone executable (not sure if that comes with your version of MATLAB or not). If you don't have the compiler and can't install MATLAB on your server, you could always go to a freelancing site such as elance.com, and pay someone $20 to compile your code for you into a windows exe file.
Either way, the end goal is to make your MATLAB function callable from the command line (the server will be doing the calling) You could make your input arguments into the slider value, and the .mat files you want to open, and the compiled version of MATLAB will know how to handle this. Once you do that, have the code create a plot and save an image of it. (using getframe or other figure export tools, check out FEX). Have your server output this image to the client.
Tah-dah, you have a crappy low cost work around!
I hope this helps , if not, I apologize!

You could always just host the MATLAB code and sample .mat on a website for people to download and play with on their own machines if they have a MATLAB license. If you are looking at having some sort of embedded app on your website you are going to need to rewrite your code in another language. The project sounds doable in python using the packages you mentioned however hosting it online will not be as simple as running a program from your command line. Django would help you build a website but I do not think that it will allow you to just run a python script in the browser.

How to integrate a python library into a Ruby on Rails application

I want to know if there is a way to integrate a library written in Python into my Rails application. I have always used gems to implement outside libraries so I have no idea how to do this(yet).
Is it possible to use this Python library?

This is mostly what you want:
Calling Python from Ruby
I've looked into this question before and, excepting the Heroku deploy, the answer was "easily! check this out". (On a fun note, there's a gem to let you embed Perl code in a Ruby file)
However, while I can't seem to find it right now, I remember reading that deploying both to Heroku required a custom buildpac, since one won't normally include the binaries necessary for the other.

Execute a python script from firefox, on a very specific app, just to let firefox provide the graphical IDE

So, I've been searching the topic for quite a while, but I am unable to find out whether it is possible or not. I suspect not, but I need to be sure.
What I'm doing:
I am building a fancy web app that uses xml, xsl and javascript. However, I need to do some transformation to a text file to convert it into a proper xml file. To do this, I use a python script.
What I need:
I am working to make as easy as possible the use of the app, but this gets kind of destroyed when the user has to execute a terminal script before anything. I need a graphical IDE for python, but I just don't have time to learn how to make one, and I would love that the entire app would work within the same web environment, much more intuitive for the user. Then, a really easy way to do that would be to use Firefox as the IDE, for example choosing the file to be transformed through it, and launching from there the python script.
What I require:
I need compatibility only with Firefox. But of course any system capable to install Python and Firefox should work as well. The user would happily install both programs, as long as they have interest in the app.
What I don't know:
Is that possible, to execute an external python script? If not, for security reasons I imagine, is there any way for the user to allow it? Maybe through the installation of a plugin?
maybe http://mozex.mozdev.org/ is what I am looking for?
Thanks!
Gerard

Yes, It is possible to execute an external python script. You can use a simpleServer (example) that receives a (Ajax) request from your page and calls a subprocess or os.startfile to launch the script. In fact, you can call the function itself from within the server and return the result (e.g. as json) to the page and use your javascript to handle it.

If you're after actually using python in firefox, rather than having the server side written in python (although the webserver can of course be running locally), I would guess pythonext (used to be pyxpcomext) is what you need.