dict.keys() — Python Technical Interview Questions & Answers

dict.keys()

dict.keys()

  • dict.keys() works on a dictionary — labelled data like marks["Asha"] = 90. Keys map to values. Loop with .items() when you need both.
  • dict.keys() — output: ['Asha', 'Ravi'].
  • Trap for dict.keys(): writing d[missing] in a viva. Prefer get when the key might not exist.
  { "Asha": 90, "Ravi": 85 }
         │           │
        key        value

Technical Interview Tip: get vs [] — one sentence + tiny dict of marks.

Code Examples for dict.keys()

Example

# dict.keys()
print(list({"Asha": 90, "Ravi": 85}.keys()))

dict.keys() — output: ['Asha', 'Ravi'].

How to Explain dict.keys() to an Interviewer

Explain dict.keys() as if you are teaching a junior — definition, then one tiny script.

dict.keys() works on a dictionary. dict.keys() — get when key may miss.

What does the example print, and why?

dict

What mistake do freshers make with dict.keys()?

dict.keys() — d[missing] → KeyError.