Learn to Code. Shape Your Future
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Have you ever seen the message “TypeError: unhashable type” when running your Python program? Do you know what to do to fix it? The message “TypeError: unhashable type” appears in a Python program when you try to use a data type that is not hashable in a place in your code that requires hashable data. … Read more
Are you writing a Python application and do you need to check for duplicates in a list? You are in the right place, let’s find out how to work with duplicates. There are several approaches to check for duplicates in a Python list. Converting a list to a set allows to find out if the … Read more
While reading a Python program you might find the expression if __name__ == ‘__main__’. Let’s have a look at what it means and why you should know about it. The condition if __name__ == ‘__main__’ is used in a Python program to execute the code inside the if statement only when the program is executed … Read more
How to count unique values in a Python list? There are multiple ways and in this tutorial we will go through them as a way for you to practice several Python constructs. The simplest way to count unique values in a Python list is to convert the list to a set considering that all the … Read more
The Python Pandas library provides a function to calculate the standard deviation of a data set. Let’s find out how. The Pandas DataFrame std() function allows to calculate the standard deviation of a data set. The standard deviation is usually calculated for a given column and it’s normalised by N-1 by default. The degrees of … Read more
Have you ever seen the error “tuple object does not support item assignment” when working with tuples in Python? In this article we will learn why this error occurs and how to solve it. The error “tuple object does not support item assignment” is raised in Python when you try to modify an element of … Read more
I want to calculate the remainder of the division between two numbers in Python, how can I do it? The Python Modulo operator returns the remainder of the division between two numbers and is represented using the % symbol. The Modulo operator belongs to Python’s arithmetic operators. Here is an example of how to use … Read more
With Python you can concatenate strings in different ways, the basic one is with the + operator. If you have two strings (string1 and string2) you can concatenate them using the expression string1 + string2. Python also provides the format() method to concatenate multiple strings together. The first and most basic way to concatenate two … Read more
One of the data types available in Python is the boolean. Knowing booleans helps create logical conditions in your Python applications. The boolean is one of the data types provided by the Python programming language. A boolean can have two values: True or False. Booleans allow to create logical conditions that define the behaviour of … Read more
How do you add an element at the end of a Python list? This is what the Python append method is for and append is not only for lists. The Python append() method adds an element at the end of an existing list. Also, it modifies the existing list instead of creating a new one. … Read more