Problem Formulation: Consider that you are trying to read the contents of a text file. How will you read the text from the file and store it in a Python list? Scenario 1 To gain better clarity over the problem, let’s have a look at a similar question asked on StackOverflow: Before we dive into … Read more
Problem Formulation You have been given a number. How will you check if the number lies between two numbers? When you check if a number lies between two other numbers it returns a boolean that determines if the number is greater than or equal to the minimum number and also less than or equal to … Read more
Summary: Use negative step in the range() function to reverse the given sequnce as: range(start, stop, -step). Another workaround is to apply the reversed() function to the given range to reverse it as: reversed(range(start, stop)). Problem: Given a range/sequence of numbers, how will you reverse the range? Example: Given:# Given rangefor i in range(1, 6): … Read more
Programming Challenge 💬 Challenge: Given a Python string. Find the longest substring for which holds that all of its characters are in alphabetical order so that the first character comes earlier in the alphabet than the second character, and so on. Here are three examples: You get the point. 🙂 Next, I’ll show you three … Read more
Expert Secret: Read More Programming Books Experts read books. Warren Buffett is said to read 1000 pages of annual reports every day. Buffett and his partner Charlie Munger became billionaires by spending 80% of their day reading. Buffett was once asked how to become smarter to which he responded: 📖 “Read 500 pages like this … Read more
To check your Python version in Google’s Colab, type !python ‐‐version using the exclamation mark ! operator in your Jupyter Notebook cell and click on the “Run” icon. After a couple of seconds an output like Python 3.9 will appear, depending on the version you’ve installed. In Jupyter notebooks, the exclamation mark ! executes commands … Read more
This article continues on the Solidity Smart Contract Examples series and implements an example of a modular contract checking that the balances being sent between the addresses comply with the requirements (docs). We’ll first lay out the entire smart contract example without the comments for readability and development purposes. Then we’ll dissect it part by … Read more
Problem Formulation and Solution Overview When a new file or folder is created, it comes with its own set of default permissions. From time to time, you will need to adjust these permissions. To follow this article, download the finxter.csv file and move this file to the current working directory. What are File Permissions? File … Read more
Problem Formulation and Solution Overview This article will show you how to generate password hashes in Python. To make it more interesting, we have the following running scenario: When new users join the Finxter Academy, they are asked for a password. How can we keep this data secure? To secure these passwords, we must convert … Read more
Is TensorFlow Better Than PyTorch? Since PyTorch made its way into the machine learning sphere in 2016, loyalists from both camps have sung the praises of their framework of choice. Today, curious minds such as yourself are looking through page after page to find out which one is worth your valuable time and effort. Both … Read more
💬 Problem Formulation: Given a Python set. How to convert it to a tuple? And how to convert the tuple back to a set? There are three main ways: Method 1: To convert a Python set to a tuple, use the tuple(my_set) function. Method 2: To convert a Python tuple to a set, use the … Read more
Python Longest String in NumPy Array To find the longest string in a given NumPy array, say arr, you can use the max(arr, key=len) function that determines the maximum by comparing the length of the array elements using the len() function as a key for comparison. You can find more about the powerful max() function … Read more