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The Solo Act
A easy Python interview practice problem on DataDriven. Write and execute real python code with instant grading.
- Domain
- Python
- Difficulty
- easy
- Seniority
- junior
Problem
Our alerting system treats one-off error codes differently from recurring ones. Write a function called find_singletons that takes a list of server response codes and returns only the codes that appeared exactly once, preserving their original order.
Practice This Problem
Solve this Python problem with real code execution. DataDriven runs your Python code in a sandboxed Docker environment and grades it instantly.