Creating a prime numbers program in python is a popular exercise to practice loops. One of the reasons is that “prime number” is a well-defined concept in mathematics. Because of that, there are no ambiguities when we consider if a number is prime or not. Condition for a prime number Let’s examine when a number […]
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When using a weakly typed programming language, sometimes is useful to check if the type of the input is the type that we are expecting. This will avoid unpredictable problems with our program. So, how can we know if the user input is an integer? We use exception handling. Python and variable types Python is
How to check if a user input is an integer in Python? Read More »
Printing patterns is a great way to practice and get a better understanding of loops in any programming language. In this post, I’ll show how to print some of these patterns. General steps to print patterns in any programming language using loops With disregard of the pattern you want to print, there are general steps
Printing patterns in python Read More »
Command-line arguments or parameters are useful in many situations. In this post, I will give you examples of when and why to use them, as well as some examples. The short answer is you can get all the command-line arguments using the following code. Keep reading to find out when and why to use them.
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Wouldn’t be cool to write a program that generates programs or code? The answer to that is closely related to the concept of metaprogramming and metaclasses (in Python). In this post, you will learn how to write code that generates code and some of the situations that can make this technique very useful. Metaclasses are
Metaclasses in python with examples Read More »
At the end of this post, you will find three cheat sheets. A Java, C# and a Python Cheat Sheet and the other one for C#. When you download the files, you will see the most common constructs of each language used in Object-Oriented Programming. Notice that in these cheat sheets, you will find only
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In this post, you will learn how to read an excel file using Pandas Library for python. We are going to use a real-world dataset as an example. If still don’t know what Pandas Library for Python is, you can check this post. When analyzing data, you can be tempted just to get data and
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Pandas is one of the tools that you can use in Python to analyze data. It is a popular library because of all the functionalities that offer and its flexibility. Pandas for python is a Data Analysis Library. It provides us with several data structures that facilitate the analysis of the data after we represent
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In this tutorial, you will learn how to create a multiplication table in python. It is one of the many examples that helps you to practice how to work with loops in any programming language. See below a picture of what we are going to create in this tutorial. As you can see in the
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Sequences are a powerful tool in mathematics and in programming. In this post, you will learn how to print a pattern with two sequences in python: the sequence 1 4 9 17 and an easier sequence that just add 2 to the previous value. If you want yo read more about sequences in mathematics, you
The sequence 1 4 9 17 in python: a tricky pattern Read More »
