無料で楽しく効果的にコードを学ぼう！
Learn by Doing
Write real code, query databases, build websites, and master AI prompts. Our interactive lessons cover every skill modern developers need.
Build Your Coding Streak
Stay consistent and watch your progress grow! Track your daily coding habit, protect your streak with freeze days, and earn rewards for showing up every day.
12 days streak
Return tomorrow to keep your streak!
January 2026
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Double or Nothing
Day 5 of 7
Streak Freeze
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Code Anywhere, Anytime
Take your coding journey on the go! No setup, no downloads - just open and start coding. Available on iOS, Android and Web with 4.9 star ratings.
You're Not Alone in This
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Promotion zoneEvery way to learn
Read, listen, test yourself, ask the AI, or look up anything you've already covered. Every lesson meets you where you are.
A variable is a named container that stores a value you can reference later in your program.
In Python, you create one by writing the name, an equals sign, then the value you want to store.
The value can change over time — reassigning the name simply points it to a new value.
Prove Your Skills
Earn certificates for every course you complete. Add them to your LinkedIn profile and resume to showcase your coding expertise to employers.
Certificate of CompletionPython Fundamentals
Add to LinkedInよくある質問
Coddyは無料ですか？
プログラミングを習得するのにどれくらいかかりますか？
プログラミングを学ぶのは難しいですか？
無料でプログラミングを学べる場所は？
最初に学ぶべきプログラミング言語は？
Coddyで修了証はもらえますか？
