💬 Question: How to convert a list of custom objects to a csv file? Example: Given is a list of custom objects of, say, type Employee that holds the name, job description, and income like so: Your goal is to write the content of the list of objects into a comma-separated-values (CSV) file format. Your … Read more
Problem Formulation and Solution Overview In this article, you’ll learn how to convert a List of Booleans to Integers. In Python, the Boolean is a built-in data type. These values represent True (1) or False (0). Also referred to as Truthy or Falsy values. In this article, we will articulate how these values behave. To … Read more
Problem Formulation Given a Python string: 💬 Question: How to convert the string to a CSV file in Python? The desired output is the CSV file: ‘my_file.csv’: a,b,c 1,2,3 9,8,7 Simple Vanilla Python Solution To convert a multi-line string with comma-separated values to a CSV file in Python, simply write the string in a file … Read more
Problem Formulation and Solution Overview In this article, you’ll learn how to convert a comma-separated string into a List. Fergus, a 10-year-old boy, is learning to code with Python. As homework, the teacher has asked the class to create a comma-separated string and convert this string into a list. Fergus needs your help. 💬 Question: … Read more
Problem Formulation and Solution Overview In this article, you’ll learn how to split a Python List in half. To make it more fun, we have the following running scenario: Lisa is writing a report concerning Population growth for three (3) countries (the US, UK, and Germany) between 2021-2022. However, she saved it as one list … Read more
Problem Formulation and Solution Overview In this article, you’ll learn how to convert a String representation of a list consisting of multiple numbers to a list of integers in Python. 🌎 Related Tutorial: How to convert a list of integers to a list of strings in Python? To make it more fun, we have the … Read more
Problem Formulation 💬 Challenge: Given an integer n. How to create a list of n empty strings ” in Python? Here are three examples: Given n=0. Create list []. Given n=3. Create list [”, ”, ”]. Given n=5. Create list [”, ”, ”, ”, ”]. Method 1: List Multiplication You can create a list of … Read more
Problem Formulation and Solution Overview In this article, you’ll learn how to write integers to a file in Python. To make it more fun, we have the following running scenario: MediTech, a pharmaceutical manufacturing company, is seeking the best way to save its drug test results. They have contacted you to provide possible solutions. Integers … Read more
Problem Formulation Given a CSV file (e.g., stored in the file with name ‘my_file.csv’). INPUT: file ‘my_file.csv’ 9,8,7 6,5,4 3,2,1 Challenge: How to convert the CSV file to a list of tuples, i.e., putting the row values into the inner tuples? OUTPUT: Python list of tuples [(9, 8, 7), (6, 5, 4), (3, 2, 1)] … Read more
Problem Formulation Given a CSV file (e.g., stored in the file with name ‘my_file.csv’). INPUT: file ‘my_file.csv’ 9,8,7 6,5,4 3,2,1 Challenge: How to convert it to a list of lists (=nested list), i.e., putting the row values into the inner lists? OUTPUT: Python list of lists [[9, 8, 7], [6, 5, 4], [3, 2, 1]] … Read more
Convert a CSV file to a list of Python dictionaries in three steps: Create a CSV file object f using open(“my_file.csv”) and pass it in the csv.DictReader(f) method. The return value is an iterable of dictionaries, one per row in the CSV file. Each dictionary maps the column header from the first row to the … Read more
The best way to convert a CSV file to a Python dictionary is to create a CSV file object f using open(“my_file.csv”) and pass it in the csv.DictReader(f) method. The return value is an iterable of dictionaries, one per row in the CSV file, that maps the column header from the first row to the … Read more