In this article, you’ll learn about the following topics: List unpacking in Python Tuple unpacking in Python String unpacking in Python ValueError: too many values to unpack (expected k) ValueError: not enough values to unpack (expected x, got y) Unpacking nested list or tuple Unpacking underscore Unpacking asterisk Sequence Unpacking Basics Python allows you to … 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
Problem: How to convert one or more tuples to a csv file? Example: Given is a tuple or list of tuples—for example, salary data of employees in a given company: Your goal is to write the content of the list of tuples into a comma-separated-values (CSV) file format. Your out file should look like this: … Read more
Problem: How to convert a list of lists to a csv file? Example: Given is a list of list—for example salary data of employees in a given company: Your goal is to write the content of the list of lists into a comma-separated-values (CSV) file format. Your out file should look like this: # file.csv … Read more
Problem Formulation and Solution Overview In this article, you’ll learn how to convert HEX values to an ASCII string in Python. To make it more fun, we have the following running scenario: Carrier Coders has decided to display a Quote of the Day on their website. Each quote is transmitted daily as HEX values. You … Read more
Problem Formulation: Given a float number. How to round the float down in Python? Here are some examples of what you want to accomplish: Solution: If you have little time, here’s the most straightforward answer: To round a positive or negative number x down in Python, apply integer division // to x and divide by … Read more
Problem Formulation and Solution Overview In this article, you’ll learn how to create a Dictionary from two (2) Lists in Python. To make it more fun, we have the following running scenario: Biogenix, a Lab Supplies company, needs to determine the best element from the Periodic Table for producing a new product. They have two … Read more
Problem Formulation: Given a float number. How to round the float up in Python? Here are some examples of what you want to accomplish: 42.42 –> 43 21.00001 –> 22 -0.1 –> 0 Solution: If you have little time, here’s the most straightforward answer: To round a number up in Python, import the math library … Read more
The most Pythonic way to convert a list of integers ints to a list of strings is to use the one-liner strings = [str(x) for x in ints]. It iterates over all elements in the list ints using list comprehension and converts each list element x to a string using the str(x) constructor. This article … Read more
Problem Formulation and Solution Overview As a Pythonista, coding issues may occur where you need to apply a function against NumPy elements. To make it more fun, we have the following running scenario: We have a NumPy array containing five (5) negative numbers related to an inconsistent inventory count. Therefore, the Vice-President of Rivers Clothing … Read more
Problem Formulation and Solution Overview As a Pythonista, coding issues may occur where you need to apply a function against array/matrix elements. To make it more fun, we have the following running scenario: The organization Happy Mortgages has six (6) different Mortgage Terms available: 30-Year, 20-Year, 15-Year, 10-Year, 7-Year, and 5-Year terms. The US Federal … Read more