Data Exploration with Data Viz Cheat Sheet

Today I collect and organize useful data visualization (Data Viz) tools that aid data exploration. I illustrate the use of the tools via the classic Abalone database, hosted on the University of California, Irvine (UCI) Machine Learning...

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Aggregations - The Elasticsearch GROUP BY

Elastic Architects designed the distributed Elasticsearch platform to follow NoSql principles. In the traditional Relational Database Management System (RDBMS) world, SQL databases use GROUP BY syntax to group rows with similar values into...

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Configure Flask to Send Form Data to Gmail

This blog post describes how to configure Flask to emit form data to your own personal Gmail account. You don't need to use Gmail, in fact, you can configure Flask to send data to any email account you have access to. This architecture uses...

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Easy ReCAPTCHA with Flask-WTF

In this HOWTO, I will demonstrate how to easily integrate the Google reCAPTCHA service into a Flask web application using Flask-WTF. The following cartoon depicts the end result. A Flask application server provides a simple (beautified) survey to...

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Connect AWS Lambda to Elasticsearch

Amazon Web Services' (AWS) Lambda provides a serverless architecture framework for your web applications. You deploy your application to Lambda, attach an API Gateway and then call your new service from anywhere on the web. Amazon takes care of...

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Pass Bootstrap HTML attributes to Flask-WTForms

Flask-WTForms helps us create and use web forms with simple Python models. WTForms takes care of the tedious, boring and necessary security required when we want to use data submitted to our web app via a user on the Internet. WTForms makes data...

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Professional form validation with Bootstrap

In this tutorial you will: Connect a Flask server to the Bootstrap service Create a trivial Jinja2 template for a Quiz form Use Bootstrap to validate forms on the client side Use a Flask "flash" message to validate forms on the server side Let's...

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