【問題】

將lst?= [ [1, 2, 3], [2, 1, 3], [8, 4, 3] ]，變?yōu)閇1, 2, 3, 2, 1, 3, 8, 4, 3]

【方法】

1. myList = [x for j in lst for x in j]

2.?

mylist = []

for i in L:

? ? mylist += i

print(mylist)

3. 使用標(biāo)準(zhǔn)庫中的itertools（循環(huán)器）

from itertools import chain

mylist = list(chain(*lst))

print(mylist)