Introduction to LabEx

Introduction

Hi there, glad to meet you! In this first lab, we'll introduce you to everything you need to know about LabEx, including how to use the environment to get maximum positive outcomes.

If you can't see the video above, click here.

Skills Graph

%%%%{init: {'theme':'neutral'}}%%%% flowchart RL linux(("`Linux`")) -.-> linux/BasicSystemCommandsGroup(["`Basic System Commands`"]) linux/BasicSystemCommandsGroup -.-> linux/echo("`Text Display`") subgraph Lab Skills linux/echo -.-> lab-178589{{"`Introduction to LabEx`"}} end

What is LabEx

LabEx is a platform that provides a virtual environment for you to learn and practice coding. It is a place where you can learn to code and get creative with your code simultaneously.

We use a simple formula to explain LabEx:

\mathrm{LabEx}=\mathrm{Lab}+\mathrm{VM}+\mathrm{AI}

Lab

Labs are themed content that typically involve multiple steps, each of which includes checks to ensure the accuracy of your actions.

Most labs involve following steps, but some parts (called Challenges) only provide a goal and require independent problem-solving.

What you are seeing now is a special guided lab, which is our beginner's guide.

VM

VM stands for Virtual Machine. It allows you to experience hands-on operations, get creative, and try the code out.

LabEx's virtual environment can be divided into Desktop, WebIDE and Jupyter Notebook.

Desktop: A Linux desktop environment. You can use it to run Linux commands and programs.
WebIDE: A code editor. You can use it to write and run code.
Jupyter Notebook: A web-based interactive computational environment for creating Jupyter notebook documents. It is widely used in data science and machine learning. You can use it to run Python code, R code, and other languages.

VM and Lab are closely integrated to ensure a good learning experience. All environments are based on the Linux operating system. In most cases, LabEx will choose the most suitable environment for you. But you can also switch between them by clicking the tabs on the top left corner.

AI

Our AI study assistant named Labby will help you learn to code. During each step, Labby will provide guidance and prompts, as well as code checking. You just need to follow Labby.

Labby also provides code debugging, concept explanations, and other functions. You can interrupt it at any time.

VM Interface

It is straightforward in terms of how to use the site. Just choose a lab you're interested in, click Start, wait a couple of seconds, and voila, there you go!

You'll enter the lab environment upon clicking on Default VM.

The system will automatically create a virtual desktop for you. It takes a couple of seconds to load, so please be patient.

Some tools you may want to know:

Save VM: save the current VM environment. You can load it later.
Restart VM: restart the current virtual desktop.
Extend: extend the current lab session for another hour.

Labby

Labby primarily provides the following functions:

🐛 debug: Labby will help you debug your code.
🧑‍🏫 explain: Labby will explain the concept to you.
❓ ask: Labby will help you find the answer to your question.
📝 comment: You can leave a comment to LabEx team.

When using debug, you can directly paste the error message of the code. If Labby cannot answer accurately, you can provide some hints before the error message. You can even paste the complete code to Labby. For example:

This is the code:

<PASTE CODE>

This is the error message:

<PASTE ERROR MESSAGE>

Please help me debug.

If you have any questions, suggestions, or feedback, you can leave a comment. It will be sent to the LabEx team.

Learning by Skill Tree

Systematic and personalized learning is the key to learning. LabEx provides Skill Trees for users to learn systematically and efficiently.

Skill Tree is LabEx's resource skeleton, linking different challenges and labs. Skill Tree is officially defined based on the technical direction, and We will keep up to date with the latest Skill Tree.

When you join a skill tree and learn labs and challenges, the associated skill points will be illuminated.

Learn Skills

Each Skill Tree has a Featured Courses section (Learn Skills), which is a recommended course for this Skill Tree. Featured courses are usually the most basic courses in this direction, and they are also the most important courses. We recommend that you complete the Featured Courses first.