我正在做一个练习来展平嵌套列表。该代码在控制台中有效,但在文件中时无效。我不知道是怎么回事。:(
def flatten(nested):
"""
>>> flatten([2, 9, [2, 1, 13, 2], 8, [2, 6]])
[2, 9, 2, 1, 13, 2, 8, 2, 6]
>>> flatten([[9, [7, 1, 13, 2], 8], [7, 6]])
[9, 7, 1, 13, 2, 8, 7, 6]
>>> flatten([[9, [7, 1, 13, 2], 8], [2, 6]])
[9, 7, 1, 13, 2, 8, 2, 6]
>>> flatten([[5, [5, [1, 5], 5], 5], [5, 6]])
[5, 5, 1, 5, 5, 5, 5, 6]
"""
simple = []
for x in nested:
if type(x) == type([]):
for y in x:
simple.append(y)
else:
simple.append(x)
return simple
if __name__ == '__main__':
import doctest
doctest.testmod()
我首先尝试递归地解决这个练习,但决定先尝试迭代。
编辑:在文件中执行时,它只打印出原始函数参数 TIA