Example CodeScreen Python assessment that requires the candidate to return the nth element in the Fibonacci sequence.
The sequence is assumed to be 0-indexed, with fibonacci(0) returning 0 and fibonacci(1) returning 1.
The file to write this function in is fibonacci.py.
The test cases that are run and are visible to the candidate are located in test_fibonacci.py.
The test cases that are run and are hidden to the candidate are located in test_hidden_fibonacci.py.