Problem Formulation and Solution Overview This article will show different ways to extract the first character of a Python string. To make it more interesting, we have the following scenario: The Government has asked Rivers Clothing to complete forms for each employee. These forms require the first character of the employee’s first name and their … Read more
Summary: Use given_string.rsplit(‘sep’, 1)[-1] to split the string and get the last element. Another approach is to use given_string.rpartition(‘sep’, 1)[-1] Minimal Solution: Problem Formulation 📜Problem: Given a string. How will you split the string and get the last element? Let’s try to understand the given problem with the help of an example: Example 1 In … Read more
Problem Formulation 📜 Problem: Given a string. How will you split the string after a specific character? Note that there can be different scenarios that can come up when you are trying to split a string after a certain character/sub-string. So, let’s understand the given problem with the help of numerous examples. 🏷️Scenario 1: Splitting … Read more
Problem Formulation and Solution Overview When working with data, you may encounter a string or list of strings containing two (2) double quotes. This article shows you how to remove one set of these double quotes. 💬 Question: How would we write code to remove the extra set of double quotes? We can accomplish this … Read more
Problem Formulation + Examples 💬 Question: Given a string of hexadecimal encoded string such as ‘\x00\xff\xf2’. How to remove the ‘\x’ prefixes or characters from the hex string? Here are a few examples of what you want to accomplish: Hex String Desired Output ‘\x00\xff\xf2′ ’00fff2’ ‘\x41\x42\x43’ ‘414243’ ‘\x53′ ’53’ ‘\xff\xff\xff\xff\xff’ ‘ffffffffff’ ‘\x00\x6a\x6f’ ‘006a6f’ Strawman Solutions … Read more
Problem Formulation Given a hex string, i.e., a string of hexadecimal digits like so: 01ffa87135affcd45deebe You want to convert a batch of k hex digits to an integer. For example with k=2, you obtain the following batches of two hex digits each: 01 ff a8 71 35 af fc d4 5d ee be Now, convert … Read more
Summary: One of the easiest ways to split a string after every n character is to use a list comprehension to and slice the string accordingly to extract every n character of the given string and store them in a list. The items of this list represent the required split substrings.A quick Look at the … Read more
💬 Question: How to convert a given hex string such as ‘0xF’ to a binary number such as ‘0b1111′? There are multiple variants of this problem depending on how you want the conversion and from which type to which type. In this article, we’ll go over the different methods from simple to more sophisticated. Let’s … Read more
💬 Question: Given a hexadecimal string such as ‘0xf’ in Python. How to convert it to a hexadecimal number in Python so that you can perform arithmetic operations such as addition and subtraction? The hexadecimal string representation with the ‘0x’ prefix indicates that the digits of the numbers do have a hexadecimal base 16. In … Read more
Problem Formulation Given a string in hexadecimal form: How to convert the hex string to a bytes object in Python? Here are a few examples: Hex String Bytes Object ’01’ b’\x01′ ’04’ b’\x04′ ’08’ b’\x08′ ’01 0a’ b’\x01\n’ ’01 02 0e 0f 0f’ b’\x01\x02\x0e\x0f\x0f’ ‘0f 0f’ b’\x0f\x0f’ Hex String to Bytes using bytes.fromhex(hex_string) To convert … Read more
Summary: You can split a given string at a specific position/index using Python’s string–slicing syntax. Minimal Example: Problem Formulation 💬Problem: Given a string, how will you split the given string at any given position? Let’s have a look at a couple of examples that demonstrate what the problem asks you to do: ◈Example 1 The following … Read more
Before we dive into named groups, let’s quickly recap normal capture groups in Python. If you already know normal “unnamed capturing groups” well, feel free to skip the first section and move right away to the next one about named capture groups in Python. 👇 What Are Python Regex Groups? A normal Python regex group … Read more