Python 从具有键和多个值的字典构建元组

Question

我正在尝试从字典构建元组，如下所示{key:值列表}。

def dictionary_tuples(key, values):
    return dict((x.key, x.value) for x in values)

graph = {'11': ['12','40','41','10'], '100': ['120','400','410','100'], '12':['11','13'], '13':['12']}
a= '11'
b = graph['11']
dictionary_tuples(a,b)

而且它不起作用。我想要实现的是: [('11','12'), ('11','40'), ('11','41'), ('11','10')]

Answer 1

使用带有双循环的列表理解:

[(key, elem) for key, value in graph.items() for elem in value]

演示:

>>> graph = {'11': ['12','40','41','10'], '100': ['120','400','410','100'], '12':['11','13'], '13':['12']}
>>> [(key, elem) for key, value in graph.items() for elem in value]
[('11', '12'), ('11', '40'), ('11', '41'), ('11', '10'), ('100', '120'), ('100', '400'), ('100', '410'), ('100', '100'), ('12', '11'), ('12', '13'), ('13', '12')]