PyPath

Two courses. One winding trail through Python.

Write real code in your browser and have it marked as you go. Start with Python Foundations, ten units from your first print statement to a project of your own. Then turn what you know on real data with Python for Data. The trail below is Foundations, stop by stop.

Choose a course Start at Unit 1

Scroll to draw the trail

The Summit: a mountain trail with ten unit stops numbered 1 through 10

The path through Foundations

Ten units as stops on one line. As you scroll, the trail draws itself — and each stop lights up when the line arrives. Python for Data picks up where it ends.

Now on the trail

Foundations

Syntax, variables, and I/O — your first real programs.

1–2 hrsBeginner

Open Unit 1

Control Flow

Conditionals, loops, and the logic that steers every program.

2–3 hrsBeginner

Open Unit 2

Functions

Parameters, returns, and scope — write code you can reuse.

2–3 hrsBeginner

Open Unit 3

Data Structures

Lists, dicts, sets, and tuples — organize information with intent.

2–3 hrsBeginner

Open Unit 4

Modules & Packages

Imports, project structure, and code you can share across files.

1–2 hrsBeginner

Open Unit 5

Object-Oriented Python

Classes, objects, and methods — model the world in code.

2–4 hrsIntermediate

Open Unit 6

Files & Errors

File I/O and exceptions — handle the messy real world calmly.

2 hrsIntermediate

Open Unit 7

Testing

Assertions, pytest habits, and confidence that your code holds.

1–2 hrsIntermediate

Open Unit 8

Advanced Topics

Recursion, external libraries, Big-O, and automation.

2–3 hrsIntermediate

Open Unit 9

Capstone Project

Plan, build, document, and present a project of your own.

2–4 hrsAll levels

Open Unit 10

Run Python where you learn it

No install, no setup. Lessons ship with a live editor — try a snippet, see the output, keep moving.

Open the sandbox Full curriculum

stops = ["Foundations", "Control Flow", "Functions"]

for i, name in enumerate(stops, start=1):
    print(f"Stop {i}: {name}")

print("Trailhead marked. Keep scrolling.")

Output

Press Run or ⌘↵ to see output

Built by students, for students

A free path from first program to real projects — made by people still on the trail.

Adam Issac

Co-founder

Saicharan Chowdarapu

Co-founder

Vihaan Krishna

Co-founder

Ready to walk the path?

Ten units. Browser-native Python. Nothing to install — just start at the trailhead.

Start learning See the curriculum