遍历映射到单个键的值列表以创建新列表

Question

提供了字典：

somedictionary = {"a":["b","c","d"],"1":["2","3"]}

如何创建单独的列表，使['a', 'b', 'c', 'd']和['1', '2', '3']是两个单独的列表？我的麻烦是遍历键值列表。

Answer 1

您可以使用items

w_dict = {"a":["b","c","d"],"1":["2","3"]}

lists = [[k] + v for k,v in w_dict.items()]

产量：

[['a', 'b', 'c', 'd'], ['1', '2', '3']]