What is Python programming language with an example?

Programming is the process of creating and writing code to tell a computer what to do. Python is a high-level programming language that is well-known for its clarity and ease of use.

In this introductory guide, we’ll go over the basic concepts of Python programming so you can start writing your own programs in no time!

What is Python Language?

Python is a programming language that is widely used and has an extensive library of pre-made code. It provides a quick and easy solution for developers when starting a new project or trying to solve a particular problem.

Python is suitable for a wide range of projects from simple websites to complex applications, such as video games and artificial intelligence programs. Several industries, including banking, government, healthcare, and education, as well as others, regularly use it. It also powers popular web-based services like Reddit and Instagram.

Since its creation in the 1990s, Python has grown to be one of the most popular programming languages today. It is software that is open-source and free to use for anything. It has a wide range of uses and is capable of producing everything from simple apps to complex games and scientific simulations.

Python can do almost anything, including the development of Facebook and YouTube apps. With the Django framework, it powers some of the world’s most popular websites. Python allows you to do pretty much anything. You can create apps, tools, games, scientific simulations, and more with it.

Python comes with a number of built-in functions and libraries that allow you to perform a variety of functions easily. These include string manipulation, mathematical calculations, encryption/ decryption, file management, and other common tasks. With just a few lines of code, you can create entire programs using these built-in libraries and functions. After that, any computer that supports Python can execute these programs.

Applications of Python

Python is an exceptionally powerful and versatile programming language that can be used for a wide variety of applications.

Here are some examples:

Web Programming

Using Python for web programming is a well-known way to make and interact with sites. Python programs help you make mind-blowing and intuitive applications. Many sites and apps use it, like Reddit, Instagram, Spotify, and Youtube. A web server and a web application use it as a connection point. Web development frameworks such as Django and Flask use Python to create web apps. They make it simple for developers to create web-based apps by leveraging existing modules. The server software they write to handle HTTP requests and serve web pages also uses them. Some popular web hosting services also use Python scripts to run their operations.

Gaming

Python is also useful for creating video games and computer games. Games written in Python include Angry Birds, Minecraft, Roblox, and Sudoku. They are a good way for those just starting out with coding to learn how to program in a fun way.

Machine Learning

Machine learning is the study of algorithms that allow computers to learn from data and perform tasks without explicit programming instructions. Python is a popular programming language for implementing machine learning algorithms in computational biology and bioinformatics. It can perform tasks such as identifying genes and proteins from DNA sequences and analyzing gene expression data. It can also develop chatbots that can respond to text conversations. Chatbots can assist consumers access information and providing customer support. They provide answers to customer questions and suggestions based on user behavior. They can even carry out business transactions like ordering products online.

Introduction to Python Programming

In this tutorial, we will be exploring the Python programming language and some of its most basic features. As a beginner, you may find this tutorial helpful for learning Python.

Let’s first look at some examples of Python code before we start.

Note: Python 3 is used to write the code below. If you are using an older version of Python, some of the commands may be different or non-existent.

Let’s start with a simple example:

print("This is the first line of code")
Code language: Python (python)

This statement simply prints the string “This is the first line of code.” to the screen. The computer processes each statement in the order in which it’s written when we write a program. The first line above is an example of a statement. Whenever we want to display something on the screen using Python, we can use the print function as shown in the example above.

The structure of a Python program

This section focuses on the fundamental organization of a Python program and the various approaches to writing Python programs. There are three main ways to structure a Python program:

• The first way to write a Python program is to create it as a file with a single line of code. This is referred to as a single-line script or “one-liner”. A one-liner is a quick and simple way to run a short program from the command line. It can also be used as a way to quickly test something out without writing an entire program.
• The second way to structure a Python program is to create it in a single file with multiple lines of code. This is called a multi-line script or “multiple liners”. Multiple liners are commonly used to write larger programs and are widely used by the web development community.
• The third way to structure a Python program is to create multiple files each containing different functions or sections of code. This is referred to as an object-oriented approach. Object-oriented approaches are the most widely used method of structuring large Python programs.

Variables and Data types in Python

Numerous programming languages use variables and data types as fundamental concepts. We’ll go over variables and data types in detail and show you how to use them in Python programs in this section.

• Variables: A variable is a piece of data that is used to store a value. It can be changed at run-time depending on the needs of the program. There are two types of variables in Python: global and local variables. Global variables are variables that are available for use throughout the entire program. Local variables can only be utilized within a single function or block of code. Both local and global variables can be used to store the same type of data (i.e. numbers, strings, etc.) however, they can have very different uses depending on the specific situation. For example, a global variable could be used to store the maximum allowable number of objects that can be instantiated in a program while a local variable could be used to store the name of an object being created within the program.
• Data Types: In computer programming, a data type is a specific type of data that a program can make use of. Python has four basic data types: integers, floats, strings, and bool. An integer is a number with a value that is whole and exact such as 7, 33, 243, -22. A float is a number with a value that is not whole and exact such as 0.05, 0.012, or -5.03. A string is a string of characters entered into a program such as “Hello world!” or “I like to eat pizza!”. A bool is a boolean value (True or False) used for decision-making purposes within a program.

Example of code that uses variables and data types in Python:

x = 15
y = "sakshi"
print(x)
print(y)
Code language: Python (python)

x = 5
print(type(x))
Code language: Python (python)

Loops and Conditional statements

Loops are a way of doing something multiple times. If you have a loop, that means that every time the program meets the conditions that you’ve set, it will run again. Conditions are like rules that you set for the program to follow. All loops have two parts: a conditional statement and a looping body. The conditional statement helps to figure out if we should do the thing inside the loop. If the answer to the conditional statement is “yes”, then we do the thing inside the loop. If the answer to the conditional statement is “no”, then we don’t do the thing inside the loop.

Examples of Python code using loops and conditional statements:

fruity = ["apple", "banana", "cherry"]
for x in fruity:
print(x)
Code language: Python (python)

i = 1
while i < 8:
print(i)
i += 1
Code language: Python (python)

Functions

Code functions are things you can use to carry out a particular task throughout a program. They have a group of statements that when put together perform a particular task and return a value, which is why they are called functions. They are similar to subroutines in other languages. To use a function, you must first define it using the def keyword and then execute it by using the function call syntax with the function name as an argument followed by parentheses containing the arguments you want to pass to the function.

Example of function

def my_function():
print("Hello from a function")
my_function()
Code language: Python (python)

Debugging tips in Python

To debug your code in Python, you should always use print statements. With these statements, you can inspect values and discover how the code operates behind the scenes. Passing invalid arguments to functions and using the wrong data types in variables are some common bugs. To correct these errors just print out the value of each argument passed to a function or change the type of a variable if needed. You can also use the debugger to validate values before running Python code. To use the debugger open an interactive interpreter with the following command:

python -m PDB myfile.py
Code language: Python (python)

This will open the debugger where you can inspect the values of variables and even stop the execution of your program to view its output.

Language Features of Python Programming

• Python has a wide range of built-in language features, including a powerful data type system, a well-defined set of functions and operators, an extensive standard library with built-in modules for many common tasks, and support for meta-programming (using programs to program other programs).
• Modules are collections of code that can be used by other Python programs. A module can contain functions, classes, objects, constants, variables, statements, and so on.
• Meta-programming is a programming language technique whereby a programmer uses existing features of a programming language to create new functionality or to modify existing functionality in interesting ways. For example, you can define your own operator to extend Python’s numeric type system or create and use user-defined class hierarchies in your own libraries.
• There is a range of other features that make Python a powerful and versatile programming language, including exceptions for error handling, functional programming features such as lambda expressions and closures, automatic memory management with garbage collection, and a command-line interface interpreter.

Conclusion

Python is a strong programming language that is simple to learn and implement. It has several applications, ranging from web development to scientific computing. Thanks for reading this article!

Frequently Asked Questions(FAQs)

What is Python? Explain in short

Python is a popular high-level interpreted programming language that’s easy to learn. Flexibility, readability, and speed make it great. It also integrates well with a number of other languages and tools, making it a useful choice for a variety of tasks.

What are some examples of Python applications? 

There are a lot of applications you can do with Python. Here are a few examples:

1. Web development
2. Scientific computing
3. Automation and Robotics

What type of programming language is Python?

Python is an easy-to-learn, read-and-write language you can use for anything. Programmers use it for high-level, general-purpose stuff. You can use it for scripting and more complex development.