list的list合并成一个list

可以使用`extend`方法来将多个列表合并成一个列表。具体操作如下：

list_of_lists = [[1, 2], [3, 4], [5, 6]]
merged_list = []
for lst in list_of_lists:
    merged_list.extend(lst)
print(merged_list)

输出：

[1, 2, 3, 4, 5, 6]

或者使用列表推导式：

list_of_lists = [[1, 2], [3, 4], [5, 6]]
merged_list = [item for sublist in list_of_lists for item in sublist]
print(merged_list)

输出：

[1, 2, 3, 4, 5, 6]