Python has become the go-to language for everything from humble startups to tech giants like Google and NASA, offering quick development and scalable solutions. By the end of this topic, you'll have the skills to read and write your first Python programs and join the thriving global community of Python programmers. Let's get started!
What is Python
Developed by Guido van Rossum in 1991, Python has gained popularity among both beginners and experts in programming. Its core philosophy emphasizes code readability, while its syntax enables programmers to express ideas concisely. Named after the comedy show Monty Python, the language reflects the creator's intention to make programming enjoyable and accessible.
Python logo
Python finds applications in a wide range of fields, including:
Web development – With frameworks like Django, FastAPI, and Flask, Python is a powerful tool for building dynamic websites and backend APIs.
Data science and machine learning (ML) – Libraries such as NumPy, pandas, and TensorFlow make Python a top language for data analysis, machine learning, and model experimentation.
Artificial intelligence (AI) – Python is widely used to build and integrate AI-powered applications, including systems based on large language models.
Scripting (task automation) – Python is commonly used to automate tasks, orchestrate workflows, and build internal tools that reduce manual work.
Do you speak Python?
Given Python's emphasis on simplicity, you're already equipped to understand and recreate basic programs with ease.
Let's create the classic "Hello, World!" program, a friendly greeting from your computer:
print("Hello, world!")You can replace the phrase within the parentheses to create your own Python program!
Python's built-in functions and methods come with intuitive names, making them easy to grasp. Here's how to use input() to request user data:
age = input("How old are you? ")
print("I know, that you're " + age + " years old")Python's use of indentation for structure, as opposed to the {} braces or semicolons in many other languages, is another feature you'll find straightforward. Notice how indentation aids in outlining the elements of the if-else statement:
age = input("How old are you? ")
if age > 18:
print("You're adult")
else:
print("You're minor")To boost code comprehension, we can also use #comments. These lines go unexecuted, and describe the code's objective:
# Define a function that acts like a parrot
# Which repeats the things you say back to you
def parrot():
answer = input()
print(answer)
# Call the parrot function
parrot()For now, you don't need to understand how all these lines of code work: appreciate their beautiful syntax that's not too far from everyday English. Don't be afraid to experiment and make mistakes — that's how you learn!
Conclusion
Welcome to the Python community! You've just started your Python journey. As you progress through your chosen course, you'll begin by solving small problems related to the topics, then apply your skills in projects, creating a solid portfolio that displays your expertise to potential employers.
We promote learning by doing. Every piece of code, even a single line, is a step toward mastering Python. So we encourage you to practice now, experiment, make errors, and ask for help in the community if you're stuck.