What will the following code display? var = '$' print(var.upper())

Python provides a powerful set of built-in methods that you can use on strings. These string methods are functions that can perform specific operations on strings and return a new string value. A common feature of string methods is that they do not modify the original string, as strings in Python are immutable. Instead, they return a new string that is the result of the operation.

For example, the upper() method converts all lowercase characters in a string to uppercase characters and returns the new string. There are numerous other string methods like lower(), capitalize(), strip(), replace(), and find(). Each serves a different purpose, such as transforming string case, searching for substrings, or replacing content. Understanding these methods is vital for text manipulation and is a basic skill for any Python programmer.

One of the strengths of Python is its comprehensive set of built-in functions that are always available for your use without the need to import any additional modules. These functions are an integral part of Python programming basics and provide quick, easy, and efficient ways to perform many common tasks.

• print() is used for displaying output.
• len() returns the length of an object.
• input() allows user input.
• int(), str(), and float() are used for typecasting.
• range() generates a sequence of numbers.

It's important to have a good grasp of these functions as they can be used in almost any program, making coding more productive and your code more readable.

Understanding the basics of Python programming is fundamental for any learner. The core principles involve knowing the syntax, understanding data types, control structures (like loops and conditional statements), and the use of functions and modules. An essential part of Python basics is the mastery of string manipulation, as it is a common task in programming.

This includes using string literals, concatenation, accessing characters, slicing, and employing string methods, such as the aforementioned upper() method. Additionally, understanding how to properly utilize Python’s built-in functions will aid in writing more concise and effective code. Remembering that Python is an object-oriented language, knowing how to define and use classes and objects is also crucial. Lastly, Python’s philosophy emphasizes code readability, so it is important to write clear and organized code that is easy for others to understand and maintain.