1 1）应该习惯用此种方法
2
3 li = [11,22,33,44,55,77,88,99,90]
4 result = {}
5 for row in li:
6 if row > 66:
7 if 'k1'not in result:
8 result['k1'] = []
9 result['k1'].append(row)
10 else:
11 if 'k2' not in result:
12 result['k2'] = []
13 result['k2'].append(row)
14 print(result)
15
16
17 2）可以用此法达到同样效果
18
19 li = [11,22,33,44,55,77,88,99,90]
20
21 result = {}
22
23 for row in li:
24 result.setdefault('k1',[])
25 result.setdefault('k2',[])
26 if row > 66 :
27 result['k1'].append(row)
28 else:
29 result['k2'].append(row)
30 print(result)
