3 examples of 'to display fibonacci series in python' in Python

6
def py_fibonacci(n):
7
    """https://stackoverflow.com/a/52133289/2536357"""
8
    i = 0
9
    nextterm = 1
10
    present = 1
11
    previous = 0
12
13
    while i < n:
14
        nextterm = present + previous
15
        present = previous
16
        previous = nextterm
17
        i = i + 1
18
19
    return nextterm

14
def fibonacci(x: int):
15
    if x < 0:
16
        return -1
17
    if x == 0:
18
        return 0
19
    cache = [0] * (x + 1)
20
    for i in range(1, len(cache)):
21
        cache[i] = -1
22
    cache[1] = 1
23
    return fibonacci_recur(x, cache)

6
def test_fib(self, func):
7
    result = []
8
    expected = [0, 1, 1, 2, 3, 5, 8, 13, 21, 34]
9
    for i in range(len(expected)):
10
        result.append(func(i))
11
    assert_equal(result, expected)
12
    print('Success: test_fib')