List manipulation in Python - growing the elements' list
我定义:
| 1 | A = [[1, 2], [3, 4], [5, 6]] | 
生产线生产的是什么:
| 1 | B = [['hello', [1, 2]], ['hello', [3, 4]], ['hello', [5, 6]]] | 
号
您可以将
| 1 2 3 4 5 | >>> add = 'hello' >>> A = [[1, 2], [3, 4], [5, 6]] >>> [[add, x] for x in A] [['hello', [1, 2]], ['hello', [3, 4]], ['hello', [5, 6]]] # or [[add] + [x] for x in A] | 
这可能有帮助:
| 1 | B = zip(['hello'] * len(A), A) | 
号
这将产生以下结果:
| 1 | B = list(map(list, zip(['hello'] * len(A), A))) |