Introduction: When building interactive programs, such as games or applications that rely on user input, it’s important to ensure that the data entered is correct and within expected boundaries. This is called input validation. Python provides various ways to check whether user input meets certain criteria, ensuring that the program can proceed without errors or …
Introduction: In this lesson, we’ll dive into some advanced string methods in Python that help you check the properties of a string. These methods are particularly useful when validating input, such as checking whether a password meets certain security requirements. For example, you can use these methods to check whether a password contains letters, numbers, …
Advanced String Methods (isalpha, isdigit, islower, isupper) Read More »
Introduction: In this lesson, we’ll learn two essential concepts in Python: string formatting and string slicing. These tools allow you to manipulate and display text in a neat and organised way, making your programs more dynamic and user-friendly. String Formatting: String formatting is useful when you want to insert variables or values into a string. …
Introduction: Strings in Python come with powerful built-in methods that allow us to easily search, manipulate, and format text. These operations are essential for many programming tasks, such as cleaning up messy data, searching for specific words, or altering text to suit your needs. Understanding how to find, replace, split, and slice strings will give …
String Methods in Python (find, replace, split, strip, left, mid, right) Read More »
Introduction: Strings are an essential part of any programming language, and in Python, they are sequences of characters used to store text. You can perform various operations on strings, such as finding their length, converting between uppercase and lowercase, combining them, or even converting characters to their ASCII values and vice versa. These concepts will …
Basic String Handling in Python (len, upper, lower, concatenation, ord and char) Read More »
Introduction: A loop in programming is a structure that allows you to repeat a block of code multiple times. For example, if you want to print something 10 times, you can use a loop to automate that repetition instead of writing the same print statement 10 times. But what if you need to repeat a …
Introduction: A while loop is a type of loop in Python that keeps repeating a block of code as long as a certain condition remains true. It’s like a set of instructions that keeps going until something tells it to stop. Imagine you’re playing a video game. You keep playing as long as your health …
Introduction to While Loops (Condition-Controlled Loops) Read More »
Introduction: A for loop is a construct in Python that lets you repeat a certain task over and over again, automatically. Imagine you wanted to do something simple, like printing “Hello!” on the screen 10 times. Instead of typing out the print statement 10 times, you can use a for loop to do it for …
Introduction to For Loops (Count-Controlled Loops) Read More »
Introduction: Now that we’ve explored if statements, else, and comparisons with strings and numbers, it’s time to make your code even more powerful with elif (else-if) statements and logical operators like and, or, and not. These concepts will allow your code to make multiple decisions more efficiently and handle more complex conditions. Introduction to elif …
Introducing elif and Logical Operators: Building Smarter Conditions Read More »
Introduction: In our previous lesson, we learned how to use if statements with == and != to compare values and make decisions based on whether things are equal or not. Now, let’s take things a step further and introduce comparison operators like < (less than), > (greater than), <= (less than or equal to), and …
Expanding on if Statements: Using <, >, <=, >= for Numerical Comparisons Read More »
