Flattens a list of lists once.
Use nested list comprehension to extract each value from sub-lists in order.
代码实现
def flatten(lst):
return [x for y in lst for x in y]使用样例
flatten([[1,2,3,4],[5,6,7,8]]) # [1, 2, 3, 4, 5, 6, 7, 8]Flattens a list of lists once.
Use nested list comprehension to extract each value from sub-lists in order.
def flatten(lst):
return [x for y in lst for x in y]flatten([[1,2,3,4],[5,6,7,8]]) # [1, 2, 3, 4, 5, 6, 7, 8]