list = [[1,'B',3],[2,'A',4],[3,'F',5],[4,'D',6],[2,'C',4],[1,'D',3],[2,'C',4],[5,'E',7]]
list = sorted(list, reverse=False, key=lambda x: x[1]) #[1]に注目してソート
print(list)
===== 実行結果 =====
[[2, 'A', 4], [1, 'B', 3], [2, 'C', 4], [2, 'C', 4], [4, 'D', 6], [1, 'D', 3], [5, 'E', 7], [3, 'F', 5]]
{{tag>python}}