💬 Question: How to convert a hexadecimal string such as “00-ff-ef-01-0f-0a-1a” to a NumPy array of integers [ 0 255 239 1 15 10 26]? Method 1: Hex String to List to NumPy Array You can solve this problem easily by breaking it into two easier ones: Here’s the code: Method 2: Use NumPy fromiter() … Read more
✨Summary: You can use different functions of the regular expressions library to split a given string by uppercase letters. Another approach is to use a list comprehension. Minimal Example Problem Formulation 📜Problem: Given a string containing uppercase and lowercase letters. How will you split the string on every occurrence of an uppercase letter? Example In … Read more
✨Summary: Use the re.split function of the regex module to split the string using the given delimiter and set the regex flag re.IGNORECASE to ensure a case-insensitive split. Minimal Example Problem Formulation 📜Problem: Given a string containing a mixed blend of uppercase and lowercase characters. How will you split the string using a separator that … Read more
Problem Formulation and Solution Overview This article will show you how to interpolate strings in Python. ℹ️ Interpolation is used when a string contains a placeholder for a variable or a calculation. The string is evaluated, and the placeholder is replaced by the passed data. To make it more interesting, we have the following running … Read more
⚡Summary: Use given_string.rsplit(‘sep’, 1) to split the string at the last occurrence. Another approach to solve the problem is to use given_string.rpartition(‘sep’) Minimal Example: Problem Formulation 📜Problem: Given a string. How will you split the string at the last occurrence? Example Consider that you are given a string with multiple occurrences of the word “scream”. … Read more
In this post, we will explore simple methods to convert NumPy arrays to lists. For example, we can utilize the Python function list() or the NumPy array method tolist(). Both ways are similar, but there are some differences to consider to choose the right one for each application. Python Function list() The function list() accepts … Read more
💬 Question: What is the difference between Python’s is and == operators? Answer The Python “==” operator compares equality of values whereas the Python “is” operator compares identity of objects, i.e., do the two operands point to the same object in memory. For example, the expression [1, 2, 3] == [1, 2, 3] returns True … Read more
In this article, we will use PyTorch to build a working neural network. Specifically, this network will be trained to recognize handwritten numerical digits using the famous MNIST dataset. The code in this article borrows heavily from the PyTorch tutorial “Learn the Basics”. We do this for several reasons. Knowledge Background This article assumes the … Read more
Problem Formulation 💬 Question: How to create a string of hex digits from a list of integers (0–255) so that each hex digit consists of two digits such as “00”, “01”, …, “fe”, “ff”? Here’s an example input/output pair: In: [0, 1, 2, 3, 255, 254, 253] Out: ‘00010203fffefd’ Method 1: Bytearray The easiest way … Read more
Summary: You can split a string by length by slicing the string into chunks of equal lengths. The indices to slice the string can be deduced using a list comprehension. Minimal Example: Problem Formulation 📜Problem: Given a string, how will you split the string by length? Here’s a related question asked in stack overflow that … Read more
Problem Formulation and Solution Overview This article will show you how to copy a Dictionary in Python 7 different ways. To make it more interesting, we have the following running scenario: Mr. Smith, a High School Math Teacher, has developed an exciting way to grade multiple-choice exams. He has designed a Dictionary with the exam … Read more
This tutorial explains the Python decode() method with arguments and examples. Before we dive into the Python decode() method, let’s first build some background knowledge about encoding and decoding so you can better understand its purpose. 👇 Encoding and Decoding – What Does It Mean? Programs must handle various characters in several languages. Application developers … Read more