Coding Challenge 💬 Question: Given a Python string. How to split the string after the k-th occurrence of the separator (string or character)? In other words: how to ignore the first (k-1) separator occurrences when splitting a string? Here are three examples: 👉 Related Tutorial: Python Split String After Second Occurrence Solution You can split … Read more
Coding Challenge 💬 Question: Given a Python string. How to split the string after the second occurrence of the separator (string or character)? In other words: how to ignore the first separator occurrence when splitting a string? Here are three examples: ‘a-b-c-d-e-f-g-h’ and sep=’-‘ should be split to [‘a-b’, ‘c’, ‘d’, ‘e’, ‘f’, ‘g’, ‘h’] … Read more
Overview 🌞 Do you encounter this stupid error? TypeError: ‘builtin_function_or_method’ object is not subscriptable You’re not alone—thousands of coders like you experience this error in thousands of projects every month. This short tutorial will show you exactly why this error occurs, how to fix it, and how to never make the same mistake again. So, … Read more
Problem Statement: Consider that you have been given a list in Python. How will you count the number of unique values in the list? Example: Let’s visualize the problem with the help of an example: Given: li = [‘a’, ‘a’, ‘b’, ‘c’, ‘b’, ‘d’, ‘d’, ‘a’]Output: The unique values in the given list are ‘a’, ‘b’, ‘c’, ‘d’. … Read more
Question 💬 Question: Can you use lists as values of a dictionary in Python? This short article will answer your question. So, let’s get started right away with the answer: Answer You can use Python lists as dictionary values. In fact, you can use arbitrary Python objects as dictionary values and all hashable objects as … Read more
Method 1: Return a New Empty List Using Square Brackets You can return an empty new list from a Python function using the square bracket notation [] after the return keyword using the expression return []. Here’s an example: The example also shows that the two created empty lists using two function calls point to … Read more
To print a list without its first and last elements, you can pass the result of slicing my_list[1:-1] into the print() function. This slices from the second element (included) to the last element (excluded) with negative index -1 that reads like “the first sequence element from the right”. Note that the stop index in the … Read more
To print a list without its last element, you can pass the result of slicing my_list[:-1] into the print() function. This slices from the first element (included) to the last element (excluded) with negative index -1 that reads like “the first sequence element from the right”. Note that the stop index in the slicing notation … Read more
To print a list without its first element, you can pass the result of slicing expression my_list[1:] into the print() function. This slices from the second list element to the last one. Note that the start index in the slicing notation [start:stop] is included in the output of the slicing operation. If the stop index … Read more
Problem Formulation Given a Python list of elements. If you print the list to the shell using print([1, 2, 3]), the output is enclosed in square brackets and separated by commas like so: [1, 2, 3] But you want the list without commas like so: [1 2 3] How to print the list without separating … Read more
Problem Formulation and Solution Overview This article will show you how to subtract two Lists in Python. 💡 Note: Before subtracting these Lists, ensure each List is of the same length and contains subtractable data. For example, subtracting a List of strings from a List of integers or floats will result in an error. Whereas … Read more
This article will show you how to retrieve a single generator element in Python. Before moving forward, let’s review what a generator does. Quick Recap Generators 💡 Definition Generator: A generator is commonly used when processing vast amounts of data. This function uses minimal memory and produces results in less time than a standard function. … Read more