PYTHON PROGRAM • FUNCTIONS & RECURSION

Find a Fibonacci Value Recursively in Python

Learn find a fibonacci value recursively in python with a short, executable Python example.

IntermediateRecursionFibonacci

PROBLEM UNDERSTANDING

Input and expected output

Sample input
No input required
Sample output
21

COMPLETE PYTHON PROGRAM

Complete Python implementation

python-recursive-fibonacci.py
Open in compiler
def fibonacci(number):
    return number if number < 2 else fibonacci(number - 1) + fibonacci(number - 2)

print(fibonacci(8))

GUIDED CODE TOUR • NOT LIVE EXECUTION

Study the program line by line

Use the real compiler button above to run and debug with different inputs.

CURRENT STEP

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SELECTED LINE

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EXPECTED OUTPUT FOR THE SAMPLE

21
0%Step 0 of 0

PROGRAM EXPLANATION

Algorithm and explanation

  1. Initialize the sample values used to find a fibonacci value recursively.
  2. Apply Recursion and Fibonacci to compute the required result.
  3. Display the result for find a fibonacci value recursively and compare it with the documented sample output.

This example of find a fibonacci value recursively computes the result directly from the prepared sample data. It demonstrates Recursion and Fibonacci and prints a deterministic result that can be checked against the sample output.

EFFICIENCY

Time and space complexity

Time complexity

O(2^n)

Auxiliary space

O(n)

DEBUGGING CHECKLIST

Common mistakes

Check this

For find a fibonacci value recursively, keep the data shape and value types consistent with Recursion.

Check this

Keep every dependent statement inside the correct indented Python block.

Check this

Verify the final Recursion and Fibonacci result against the sample before trying new data.

Try it yourself

Practice: Run the program with the sample input, predict its output, and then test one boundary case of your own.