🔬 Edge Case #07: None vs missing

← Courses›Creative ChallengesModule 9 · 🔬 Edge Case Hunter (10)›🔬 Edge Case #07: None vs missingfix87 / 100

Task

📝 **Task:** Implement `is_present(d, key)` returning True only if `key` is in the dict (regardless of value).

📋 Implement the function above. Tests run automatically.

💡 **Hint:** Re-read the theory if stuck.

Keep going

🎨fix

🔬 Edge Case #08: Empty list multiplied

🎨fix

🕵️ Case 02: The Mutable Default Argument

🎨fix

🕵️ Case 03: The Floating-Point Money Heist

🤖predictFREE

Prerequisites — what you should know before this track

⚡predictFREE

Prerequisites — what you should know before this track

✏️ Write your code here

🐍

Loading Python...

First visit only — ~5-10s. Stays cached afterward.

📊 Result

Press Run to see result...

Keep going

💬 Discussion