问题描述
我正在尝试将列表列表添加到列表中
a = [['xx',''ee','yy'],[1,2,3]]
existing = [['zz','ss','ww'],[4,5,6]]
将 a
的元素添加到 existing
列表中的最佳方法是什么
expected = [['zz',6],['xx',3]]
解决方法
使用 extend
或 +
进行连接:
a = [['xx','ee','yy'],[1,2,3]]
b = [['zz','ss','ww'],[4,5,6]]
b = b + a
print(b)
a = [['xx',6]]
b.extend(a)
print(b)
,
expected = existing + a
print(expected)
输出是:
[['zz',6],['xx',3]]