将引脚列表映射到生成的组合列表

Question

在的基础上，我从给定的列表中生成了一系列元素，总计为用户的输入值。从生成的数字组合中，我想更改 raspberry pi on/off 上的引脚状态。即当 maximum = 35 生成 [1, 4, 10, 20] 然后选择 1:2, 4:17, 10:27, 20:22 然后转动 pins 2, 17, 27 & 22 on 或者如果 maximum = 30 输出应该给我 [10, 20] & 10:27, 20:22 和转 pins 27 & 22 on

使用 dict 我有

import itertools
maximum = 35

data = [1, 2, 3, 4, 10, 20]
pinList = [2, 3, 4, 17, 27, 22]
dictionary = dict(zip(data, pinList))

def selection(data, maximum):
    for count in range(1,len(data)+1):
        for combination in itertools.combinations(data, count):
            if maximum == sum(combination):
                return list(combination)

i = list(selection(data, maximum))
print (i)
k = dict((key, value) for key, value in dictionary.iteritems() if key == i)
print k
aux = range(len(k))
for r in aux:
   GPIO.setup(r, GPIO.OUT) 
   GPIO.output(r, GPIO.HIGH)

我只得到

[1, 4, 10, 20] 
{}

Answer 1

将==改为in:

k = dict((key, value) for key, value in dictionary.iteritems() if key in i)

或更有效：

k = dict((key, dictionary[key]) for key in i)

将引脚列表映射到生成的组合列表

Mapping pin list to a generated combination list

python

mapping

itertools

gpio