5 examples of 'python fibonacci generator' in Python

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6def 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
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37@tasklets.tasklet
38def fibonacci(n):
39 """A recursive Fibonacci to exercise task switching."""
40 if n <= 1:
41 raise tasklets.Return(n)
42 a = yield fibonacci(n - 1)
43 b = yield fibonacci(n - 2)
44 raise tasklets.Return(a + b)
14def 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)
6def 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')
210def _create_fibonacci_points(n):
211 """
212 Get an array of approximately equidistant points on a sphere surface
213 using a golden section spiral.
214 """
215 phi = (3 - np.sqrt(5)) * np.pi * np.arange(n)
216 z = np.linspace(1 - 1.0/n, 1.0/n - 1, n)
217 radius = np.sqrt(1 - z*z)
218 coords = np.zeros((n, 3))
219 coords[:,0] = radius * np.cos(phi)
220 coords[:,1] = radius * np.sin(phi)
221 coords[:,2] = z
222 return coords

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