Ubuntu Hacks: Launching Chrome Apps at Startup

Chrome apps are really handy when you don't want to overhaul your system with apps for every little purpose. Starting those apps at startup can be used instead of manually starting them everytime you want to use them. Like starting the messenger at startup of the system. To do that. First, go to Ubuntu's search menu and search for startup applications. Then open that application preference and add new startup application. Put any name you want in there. Also, in command section, write: google-chrome --app-id=[app_id] Now you need…

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Play With Pillow

Who hasn't heard PIL? It's an image processing library made by python (Python Image Library). Pillow is an extension of it. So installing pillow is really easy: pip install pillow Now we are going to do some image processing cool stuff: First Load Image: from PIL import Image, ImageOps img = Image.open('image.png') Resize Image Suppose We want to resize an image and maintain its aspect ratio. Here we need to get the aspect ratio after resizing. Here is a snippet for it: def get_resize_image_size(image,…

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Python: Selenium with PhantomJs to capture Screenshots

PhantomJS is a headless WebKit scriptable with a JavaScript API. It has fast and native support for various web standards: DOM handling, CSS selector, JSON, Canvas, and SVG. And Selenium is A portable software-testing framework for web applications. Selenium provides a record/playback tool for authoring tests without the need to learn a test scripting language (Selenium IDE) Using the combination of selenium and PhantomJs can give you a way to capture screenshots and use it in your choices. For that let's install PhantomJs in your computer. For Ubuntu/Debian…

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Documentation Of Django Encrypt File

Django Encrypt File is a simple Library which can be used to encrypt uploaded files and store them. Installation Use pip to install it: pip install djangoencryptfile Or pip install https://github.com/ruddra/django-encrypt-file/tarball/0.7 Basic Usage from djangoencryptfile import EncryptionService from django.core.files import File password = '1234' service = EncryptionService(raise_exception=False) open('readme.md', 'rb') as inputfile: usefile = File(inputfile, name='readme.md') encrypted_file = service.encrypt_file(useFile, password, extension='enc') # it will save readme.md.enc decrypt_file = service.decrypt_file(encrypted_…

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Docker: Use Celery in Django(Redis as Broker)

In previous two posts, we have deployed Django with Postgres, Nginx, now its time to do some async stuff using Celery. In this post, I will do the magic tricks first, explain them later. Add Celery to Django To add celery, we need make a container for celery. We can re-use the Dockerfile of django for making celery's container like this: FROM python:latest ENV PYTHONUNBUFFERED 1 #ENV C_FORCE_ROOT true # intentionally kept it commented ENV APP_USER user ENV APP_ROOT /src RUN groupadd -r ${APP_USER} \ &…

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