| 知乎专栏 ｜ 多维度架构 |
随机抽取list成员
import random
# random choice from a list
for i in range(5):
print random.choice([1, 2, 3, 5, 9])
test = []
test.append('1')
test.append('b')
test.append('c')
print(test)
>>> set = {'a','b','c'}
>>> set
set(['a', 'c', 'b'])
>>> set = {"one", "two", "three","one"}
>>> set
set(['three', 'two', 'one'])
>>> set.add('four')
>>> set
set(['four', 'three', 'two', 'one'])
>>> ','.join(set);
'four,three,two,one'
>>> set('four,three,two,one'.split(','));
{'one', 'four', 'three', 'two'}
>>> fruit = [ 'banana', 'orange', 'pineapple' ]
>>> set(fruit)
{'banana', 'pineapple', 'orange'}
随机字典的 key 和 value
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names = {1: '张三', 2: '李四', 3: '王五', 4: '赵六', 5: '牛七', 6: '马八'}
print(random.choice(list(names.keys())))
print(random.choice(list(names.values())))
dict1 = {'name','neo'}
dict2 = {'nickname','netkiller'}
dict1.update(dict2)
print(dict1)
{'name', 'neo', 'nickname', 'netkiller'}
data = [
{
"question": "为什么过只加汇摇晃",
"answer": "因为支架是由很多支索小圆轮组成的，所以吊厢过索轮时会有轻微的震动和摇晃，这些都是正常的",
"ratio": 0,
"distance": 41.112388610839844
},
{
"question": "吊厢过之家为什么会摇晃",
"answer": "因为支架是由很多支索小圆轮组成的，所以吊厢过索轮时会有轻微的震动和摇晃，这些都是正常的",
"ratio": 0,
"distance": 42.78510284423828
},
{
"question": "嗦道为啥会摇晃",
"answer": "因为支架是由很多支索小圆轮组成的，所以吊厢过索轮时会有轻微的震动和摇晃，这些都是正常的",
"ratio": 1,
"distance": 44.00849914550781
}
]
ret = max(data, key=lambda dic: dic['ratio'])
print(ret)