Python学习第六天——Fibonacci

#coding=utf-8
#Version:python 3.6.0
#Tools:Pycharm 2017.3.2
_date_ = '2018/4/19/019 16:26'

def fib(max):
    n,a,b = 0,0,1
    while n <= max:
        print(n," --> ",b)
        a,b,n= b,a+b,n+1
        # b = a + b
        # a = b
        #n += 1
    return "done"

print(fib(50))

E:ProgramDataAnaconda3python.exe D:/Python_proc/s14/week4/day1/Fibonacci.py
0  -->  1
1  -->  1
2  -->  2
3  -->  3
4  -->  5
5  -->  8
6  -->  13
7  -->  21
8  -->  34
9  -->  55
10  -->  89
11  -->  144
12  -->  233
13  -->  377
14  -->  610
15  -->  987
16  -->  1597
17  -->  2584
18  -->  4181
19  -->  6765
20  -->  10946
21  -->  17711
22  -->  28657
23  -->  46368
24  -->  75025
25  -->  121393
26  -->  196418
27  -->  317811
28  -->  514229
29  -->  832040
30  -->  1346269
31  -->  2178309
32  -->  3524578
33  -->  5702887
34  -->  9227465
35  -->  14930352
36  -->  24157817
37  -->  39088169
38  -->  63245986
39  -->  102334155
40  -->  165580141
41  -->  267914296
42  -->  433494437
43  -->  701408733
44  -->  1134903170
45  -->  1836311903
46  -->  2971215073
47  -->  4807526976
48  -->  7778742049
49  -->  12586269025
50  -->  20365011074
done

Process finished with exit code 0