CodeEval Fibonacci series

fibonacci_series.py

import sys


def fib(n):
    if n < 2:
        return n
    return fib(n - 1) + fib(n - 2)


if __name__ == '__main__':
    test_cases = open(sys.argv[1], 'r')
    for line in test_cases:

        print(fib(int(line.rstrip())))

    test_cases.close()