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first_lesson.py

# Learn one clear idea at a time
def start(topic):
    practice = "small steps"
    return practice

start("Python")

804practical lessons

48learning paths

Freefrom start to finish

Choose your path.

Start with one language. Build confidence lesson by lesson.

Understand it, write it, then prove it.

Short explanations use plain language and practical examples.

Practice immediately in the browser with useful feedback when you get stuck.

Pass the final test and earn a certificate that records what you learned.