如何转换list1中的list = [1,2，[3,4]，[5,6]，7，[8,9,10]] = [1,2,3,4,5,6,7,8 ，9,10]在python中？

这是我的答案。首先，不要将您的列表称为“列表”。这使我们无法使用此答案所需的内置列表关键字。

import collections
from itertools import chain

#input list called l
l = [1,2,[3,4],[5,6],7,[8,9,10]]

#if an item in the list is not already a list (iterable) then put it in one. 
a = [i if isinstance(i, collections.Iterable) else [i,] for i in l]

#flattens out a list of iterators
b = list(chain.from_iterable(a))

print b
#[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]