Python：每日一题 166

CH10

1. def fibonacci(num):
   
2.     a, b, result = 1, 1, 0
   
3.     x, y = 0, 1
   
4.     temp = ''
   
5.     for i in range(num):
   
6.         temp += str(a+b)+'/'+str(x+y)
   
7.         if(i<num-1):
   
8.             temp += '+'
   
9.         result += (a+b)/(x+y)
   
10.         c, z = a, x
    
11.         a, x = b, y
    
12.         b = c+b
    
13.         y = z+y
    
14.     temp += ('=' + str(round(result, 2)))
    
15.     return temp
    
16. print(fibonacci(20))

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1. 2/1+3/2+5/3+8/5+13/8+21/13+34/21+55/34+89/55+144/89+233/144+377/233+610/377+987/610+1597/987+2584/1597+4181/2584+6765/4181+10946/6765+17711/10946=32.66

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