Software engineering and personal development
Python is renowned for its elegant and versatile syntax that often leads to efficient and concise code. In this quick blog post, we’re going to explore a handy Python trick that utilizes dictionaries to effortlessly assign default values for missing keys. This simple technique can save time and streamline your code, making it an essential tool for any Python developer.
Continue reading
One of the most attractive features of Python is its readability and conciseness, allowing developers to write elegant and efficient code. In this article, we will explore a Python method called “Compact” that helps remove falsy values from a list using filter().
The Compact method is a simple yet powerful Python function that removes falsy values (False, None, 0, and “”) from a list. It does this by utilizing the filter() function, which returns an iterator that includes only the elements of the list that satisfy a specific condition.
Continue reading
Working with dictionaries in Python is a common task for many programmers, as it allows them to store and manipulate data in a key-value format. However, sometimes we may need to access a key in a dictionary that does not exist, and we want to provide a default value in such cases. The get() method in Python provides a simple and elegant solution to this problem.
The get() method is used to retrieve the value of a specified key in a dictionary. It takes two parameters: the key to look for and a default value to return if the key is not found in the dictionary. If the key is present in the dictionary, get() returns the corresponding value. Otherwise, it returns the default value specified.
Let’s look at the following code snippet:
dictionary = {'first_element': 1, 'second_element': 2}
print(dictionary.get('third_element', 3)) # 3
In this code, we have a dictionary with two key-value pairs. We then use the get() method to retrieve the value associated with the key 'third_element'. Since this key is not present in the dictionary, the method returns the default value of 3.
Python is a powerful programming language that offers a wide range of features to make code more readable and concise. One such feature is the ability to chain function calls together in a single line.
Let us briefly write an example and then explain it:
def add(a, b):
return a + b
def subtract(a, b):
return a - b
a, b = 4, 5
print((subtract if a > b else add)(a, b)) # 9 
Dictionaries also known as maps are data structures that are used a lot in different scenarios. The process of getting an element from a dictionary can be done using an element that is not part of the dictionary which results in an error.
For example, let us take this scenario where we have a dictionary that has an element with the key name and another one with the element surname. If we want to access it using another element, such as age, we are going to see an error like the following:
my_dictonary = {"name": "Name", "surname": "Surname"}
print(my_dictonary["age"])
Continue reading
When you create a new array in Java, you can set up the length of it. If you are programming mostly in Python these days, then you may not be aware that you can also do that in Python.
Let’s say that we have a fixed number of students and we want to save their heights in a list.
We can of course just declare an empty list and save their heights by appending new elements to the empty list.
Continue reading
In the last article, I shared a simple way that you can use to find the first element in a list without using the index 0.
In case you haven’t read it and you do not want to read it now, here is a short recap that is also going to be helpful in this article.
Continue reading
Img source: twotutorial.com
Comma Separated Values (CSV) files represent some commonly used files. You may have a CSV file generated from a report generated, and then you may need to write a Ruby method or task to insert it into the database. Continue reading
Windows 10 is one of the latest operating systems that has been announced recently, and new versions of Windows series have been produced throughout the years. Its first version was released nearly 30 years ago and it differs so much, that it would be even difficult for a stranger to identify them as units of the same family.© 2024 Fatos Morina
Theme by Anders Noren — Up ↑
