Before we learn about the money, let’s get this question out of the way: What is a Quant Developer? A quantitative developer (i.e., Quant) is a financial programmer focused on financial modeling and quantitative finance and trading. Quants use their profound knowledge of statistics and math, finance, data structures, algorithms, machine learning, scientific computing, data … Read more
💬 Question: Given a list of lists such as [[1, 2], [3, 4]]. How to convert it to a tuple of tuples such as ((1, 2), (3, 4))? If you’re in a hurry, here’s the most Pythonic way to convert a nested list to a nested tuple: Use a generator expression with the built-in tuple() … Read more
💬 Question: Given a tuple of tuples such as ((1, 2), (3, 4)). How to convert it to a list of lists such as [[1, 2], [3, 4]]? If you’re in a hurry, here’s the most Pythonic way to convert a nested tuple to a nested list: The list comprehension statement [list(x) for x in … Read more
Before we learn about the money, let’s get this question out of the way: What is a Test Automation Engineer? A Test Automation Engineer is a software developer who creates automated software tests for existing or new applications. Testing is a crucial phase in the software development cycle to learn about bugs, usability, and security … Read more
This tutorial is drawn from my book The Art of Clean Code (NoStarch 2022): Write Clean & Simple Code Story: I learned to focus on writing clean code the hard way. One of my research projects during my time as a doctoral researcher in distributed systems was to code a distributed graph processing system from … Read more
Before we learn about the money, let’s get this question out of the way: What is Tableau? Let’s have a look at the definition inspired by the official Tableau website: Tableau is a visual data analytics platform focused on the business analytics use case that helps you use data to solve problems. It is great … Read more
Problem Formulation Say, you want to find a regex pattern in a given string. You know the pattern exists in the string. You use the re.match(pattern, string) function to find the match object where the pattern matches in the string. 💬 Problem: The Python regular expression pattern is not found in the string. The pattern … Read more
Today, I stumbled upon this beautiful regex problem: Given are a multi-line string and a regex pattern. How to find all lines that do NOT contain the regex pattern? I’ll give you a short answer and a long answer. The short answer: Use the pattern ‘((?!regex).)*’ to match all lines that do not contain regex … Read more
Before we learn about the money, let’s get this question out of the way: What is a Database Administrator? A database administrator (DBA) is an IT professional responsible for maintaining the reliable, efficient, and secure execution of a database management system (DBMS). In this way, a database administrator is responsible for providing the data infrastructure … Read more
Before we learn about the money, let’s get this question out of the way: What is a Database Engineer? A database engineer is responsible for providing the data infrastructure of a company or organization. This involves designing, creating, installing, configuring, debugging, optimizing, securing, and managing databases. Database engineers can either work as employees or as … Read more
Before we learn about the money, let’s get this question out of the way: What Is a Distributed System? A distributed system is a computer system spread across multiple computing devices connected via a communication network. Each participating device takes over part of the overall work performed by the system. By means of the collaboration … Read more
Before we learn about the money, let’s get this question out of the way: What Does a Security Engineer Do? A security engineer is a “white-hat hacker”, i.e., an IT professional who analyzes computer systems and computer networks to ensure they are running securely. This involves proactive analysis and understanding of possible security threats and … Read more