python - 匹配和追加

Question

我试图弄清楚如何通过另一个列表运行一个列表，并且每当名字匹配时，将其附加到新列表(如果存在)

list1 = [["Ryan","10"],["James","40"],["John","30"],["Jake","15"],["Adam","20"]]

list2 = [["Ryan","Canada"],["John","United States"],["Jake","Spain"]]

所以它看起来像这样。

list3 = [["Ryan","Canada","10"],["John","United States","30"],["Jake","Spain","15"]

到目前为止，我还没有真正能够接近，所以即使是最小的指导也会非常感激。谢谢。

Answer 1

您可以将它们转换为字典，然后使用列表理解:

dic1 = dict(list1)
dic2 = dict(list2)
list3 = [[k,dic2[k],dic1[k]] for k in dic2 if k in dic1]