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The First Class Function
A medium Python mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.
- Domain
- Python
- Difficulty
- medium
- Seniority
- mid, senior
Interview Prompt
Demonstrate that Python functions are first-class objects. Write a function apply_twice(f, x) that applies a given function f to x, then applies it again to the result, returning the final value. Then write a function compose(f, g) that returns a new function which applies g first then f. Return the results from a test batch.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write your python solution with real code execution
- Get instant feedback and a hire/no-hire decision