What Is Python?
Complete Beginner's Guide

When you explore topics such as AI chatbots, image generation, data analysis, and workflow automation, you will often encounter the name Python. Python is not a language used only for AI, but it is one of the first programming languages many people encounter when they want to understand and work directly with today's AI and data technologies.

So what exactly is Python, where is it used, and why has it received even more attention since generative AI became widespread? After looking at Python's major uses and the core syntax you need to know first, this guide will introduce Codedash's learning approach, where you can run code directly in your browser with nothing to install.

What Is Python?

Python is a programming language used to describe the tasks you want a computer to perform.

Just as people use languages such as English or Korean to communicate with one another, we use programming languages with defined rules to give instructions to computers. Python's syntax is relatively concise and its code is easy to read, so it is widely used for everything from introductory programming education to building real-world applications.

For example, the following Python code displays a sentence on the screen.

print("Hello")

print() is a built-in Python function used to display text or numbers on the screen. Its readable name and simple structure make it relatively easy for people seeing code for the first time to follow what each line does.

Where Is Python Commonly Used?

Not every program is built with Python alone, but Python is especially common in the following fields.

Python offers a wide range of tools, including NumPy and pandas for data analysis, Django and FastAPI for web development, and PyTorch and TensorFlow for AI. The ability to combine proven tools instead of building every required feature from scratch is another reason Python is used across so many fields.

Why Python Has Become More Important in the AI Era

Python was already being used in artificial intelligence and data science before generative AI became widely known. More recently, Python skills have become important not only for developers researching AI models directly, but also for people who want to connect existing AI systems to their own work or services.

Simply sending a question to an AI model does not complete every task. You may also need to organize input data, process multiple sources repeatedly, save and inspect AI output, and connect it to other web services. Python can be used to automate these tasks as a single workflow.

Core Python Syntax to Learn First

You do not need to memorize all of Python's syntax at once. A good place to begin is understanding that code runs from top to bottom, then learning variables, conditionals, loops, and functions in order.

1. Output and Function Calls

print("Starting Python.")

print is the function's name, and () means that the function is being called and run. The string inside the parentheses is a value passed to the function.

2. Variables and Values

name = "Cody"
energy = 3

print(name)
print(energy)

A variable is a place that stores a value under a name for use in a program. Here, the string "Cody" is stored in name, and the integer 3 is stored in energy. In Python, = means to store the value on the right in the variable on the left.

3. if/else Conditionals

energy = 3

if energy > 0:
    print("You can move.")
else:
    print("Not enough energy.")

Conditionals run different code depending on the situation. If energy > 0 is true, the code under if runs; if it is false, the code under else runs. The : at the end of the line and the indentation of the lines below it are also part of Python's syntax.

4. for and while Loops

You can use for when you want to repeat something a set number of times.

for step in range(3):
    print("Moving one space.")

You can use while when the number of repetitions is not known in advance and the code should keep running while a particular condition is true.

steps = 3

while steps > 0:
    print("Moving one space.")
    steps = steps - 1

A while loop repeats its indented code while its condition is true. If steps is not reduced by 1 inside the loop, the condition may remain true and create an infinite loop, so you also need to consider how the loop will end.

5. Creating Functions

def greet(name):
    print(name + ", nice to meet you.")

greet("Cody")

A function groups a sequence of instructions under one name so it can be reused. Here, def defines the greet function, and greet("Cody") calls it with the required value.

Storing state in variables, making decisions with conditionals, reducing repeated code with loops, and grouping behavior in functions form the basic structure of a Python program.

Reading Syntax and Applying It to Problems Are Different Skills

Reading that if evaluates a condition and while repeats code may not be enough to immediately know which syntax to use in a real problem.

For example, if a character needs to change direction depending on whether there is an obstacle ahead, you need a conditional. If the character must repeat the same action until reaching the goal, you need to think about both a loop and its ending condition. The role of each syntax feature becomes clearer when you choose and run it yourself while solving a problem.

For beginners, installing Python and a code editor on a computer while also learning how to run files can feel like a burden. Running short programs in a browser and seeing the results immediately lets you focus first on syntax and program flow.

Practice Directly in Your Browser with Codedash

Codedash is a coding education website where you can run games in your browser and practice Python syntax without installing a separate Python runtime or code editor.

Codedash offers games such as Python Dungeon, Python Farm, and Python Mine, where you use code to complete missions. You move a character, inspect its surroundings, write the required actions in code, and see the results immediately on the game screen.

Learning Interface

If text-based code is not yet familiar, you can first see the order and structure of actions with blocks. You can then write a solution to the same problem in Python and compare how the block structure is expressed as actual syntax.

Your First Mission: Move the Character with move_right()

The first level of Python Dungeon Chapter 1 is called First Steps. Its goal is simple.

Use move_right() to reach the goal.

This level uses just one game command.

move_right()

1. When you first enter the level, the Block Coding tab is open by default with one move-right block in place.
2. Select the Python tab to write text-based code directly.
3. Below the existing line of move_right() in the code editor, add the same command on four more lines for a total of five.
4. Select Run Code and check whether the character reaches the goal.

Each call to move_right() moves the character one space to the right. To move five spaces from the starting point to the goal, you can write the following code.

move_right()
move_right()
move_right()
move_right()
move_right()

When you select Run Code, the five function calls are processed from top to bottom, and the character moves right until it reaches the goal.

Here, move_right() is not a built-in Python function. It is a game-specific function provided by Python Dungeon. It still uses standard Python function-call syntax, so the code demonstrates the following concepts.

Even this short program contains important Python fundamentals: a function call, parentheses, and top-to-bottom execution order.

Run Lessons with Classroom Features

In addition to individual learning, Codedash provides classroom features for elementary and secondary school coding classes.

Start with Free Chapters Without Logging In

Python Dungeon Chapters 1 and 2 are currently available without login or payment. Together, the two chapters provide a total of 10 free levels to try.

Chapter 2 unlocks after you complete all five levels in Chapter 1. Later chapters unlock in order as you complete each preceding chapter. You begin with short commands such as move_right(), then move on to missions that involve traveling in several directions or checking the situation in the game.

Individual users must log in and purchase access to play Chapters 3 through 8. Access lasts for 365 days from the payment date. To find out whether game-based learning suits you, you can begin with Chapter 1 without creating an account.

Who Is It For?

• Students encountering Python for the first time
• People interested in AI and data who want to learn Python from the basics
• People who want to run code before installing anything
• Parents who want to explore their child's interest in coding
• Teachers or instructors who want to begin lessons with game missions
• Learners moving from block coding to text-based coding

Codedash is not a course that teaches every Python feature at once or has you develop a game directly with Python. It is a learning environment where you use a limited set of game functions and missions to practice concepts such as function calls, execution order, conditionals, and loops.

If the character reached the goal, you have experienced Python function calls and code execution order firsthand. In later levels, observe the game screen and choose the necessary actions and syntax yourself.

Frequently Asked Questions