Python tutorials

September 25, 2020 Python

What are the Big Guys Using?

Summary: The largest companies utilizing the most data science resources are moving rapidly toward more integrated advanced analytic platforms. The features they are demanding are evolving to promote speed, simplicity, quality, and manageability. This has some interesting implications for open source R and Python widely taught in schools but significantly less necessary with these more sophisticated platforms. We continue to be dazzled, and perhaps rightly so, by the advances in deep learning and question answering machines like Watson. And […]

September 25, 2020 Python

Why R is Bad for You

Summary: Someone had to say it. In my opinion R is not the best way to learn data science and not the best way to practice it either. More and more large employers agree. Someone had to say it. I know this will be controversial and I welcome your comments but in my opinion R is not the best way to learn data science and not the best way to practice it either. Why Should We Care What […]

September 25, 2020 Python

Will Python Replace Java?

According to the IT programming trend, Java is currently more popular than other programming languages in terms of number of jobs, number of existing Java developers and overall usage statics in IT compared to Python. According to the latest usage statistics posted on a popular Technology Survey site, Java is being used by 3.0% websites as a server-side programming language, whereas only 0.2% of websites use Python. However, all the recent reports have highlighted that the usage and popularity of Python […]

September 23, 2020 Advanced, Computer Vision, Deep Learning, Python, Technique, Unstructured Data Leave a comment

A Detailed Study of Self Supervised Contrastive Loss and Supervised Contrastive Loss

Introduction Supervised Contrastive Learning paper claims a big deal about supervised learning and cross-entropy loss vs supervised contrastive loss for better image representation and classification tasks. Let’s go in-depth in this paper what is about. Claim actually close to 1% improvement on image net data set¹. Architecture wise, its a very simple network resnet 50 having a 128-dimensional head. If you want you can add a few more layers as well. Architecture and training process from the paper Codeself.encoder = […]

September 21, 2020 Python Leave a comment

Python Virtual Environments Explained

What is VirtualEnv? The virtualenv tool creates an isolated Python environment (in the form of a directory) that is completely separate from the system-wide Python environment. What this really means is that any settings, 3rd-party packages, etc. from the system-wide environment do not appear in the virtual environment, so it’s almost like you have a clean Python install. This is useful for when you want to have a clean-slate for your projects. Let’s say you have boto version 2.7.0 installed […]

September 21, 2020 Python Leave a comment

Pyramid Explained

What is Pyramid Pyramid is a Python web framework created from the combination of Pylons and repoze.bfg, resulting in a flexible, easy to use framework. Pyramid puts much of its focus in being flexible, so no application will be constrained by decisions made by the Pyramid creators. For example, you can use Mako or Chameleon for templating, just about any type of database for persistence, and a number of different methods for view routing (the list goes on). Many features […]

September 21, 2020 Python Leave a comment

How to Exploit the Heartbleed Bug

First we explained how it worked, and now, thanks to Jared Stafford (and stbnps on Github for explanations) we can show you how to exploit it. Heartbleed is a simple bug, and therefore a simple bug to exploit. As you’ll see below, it only takes about a single page of Python to exploit this bug. Before we get to the code, here are a few reference links to help you understand the SSL protocol: The Code #!/usr/bin/python # Quick and […]

September 21, 2020 Python Leave a comment

Example: Upload a File to AWS S3 with Boto

Example Code Amazon Web Services (AWS) is a collection of extremely popular set of services for websites and apps, so knowing how to interact with the various services is important. Here, we focus on the Simple Storage Service (S3), which is essentially a file store service. All files must be assigned to a bucket, which is assigned a name and can be addressed by http://s3.amazonaws.com/{bucket}/{key}. Each file is assigned a unique key, which can be used later on to retrieve […]

September 21, 2020 Python Leave a comment

How to Send an Email with boto and SES

Introduction Pretty much every user-based app and website needs to send an email to the user at some point, so eventually you’ll have to deal with the joyous world of programmatic emailing. There are quite a few services popping up to help you with this, but with every app having its own unique requirements, few of these services adequately get the job done. So having faced the problem a few times (and in a few languages), I decided to write […]

September 21, 2020 Python Leave a comment

The Best Machine Learning Libraries in Python

Introduction There is no doubt that neural networks, and machine learning in general, has been one of the hottest topics in tech the past few years or so. It’s easy to see why with all of the really interesting use-cases they solve, like voice recognition, image recognition, or even music composition. So, for this article I decided to compile a list of some of the best Python machine learning libraries and posted them below. In my opinion, Python is one […]

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