以Python形式将多个值插入列表

Question

我想转此列表：

l=["Three","Four","Five","Six"]

进入这一个：

['Three', 3, 'Four', 4, 'Five', 5, 'Six', 6]

我使用此代码（效果很好）来执行此操作：

for i,j in zip(range(1,len(l)*2,2),range(3,7)*2):
    l.insert(i,j)

但我猜Python不会为此感到骄傲。这有更短的方法吗？

Answer 1

我可能会这样做：

>>> a = ["Three","Four","Five","Six"]
>>> b = range(3,7)
>>> zip(a,b)
[('Three', 3), ('Four', 4), ('Five', 5), ('Six', 6)]
>>> [term for pair in zip(a,b) for term in pair]
['Three', 3, 'Four', 4, 'Five', 5, 'Six', 6]

或使用itertools.chain：

>>> from itertools import chain
>>> list(chain.from_iterable(zip(a,b)))
['Three', 3, 'Four', 4, 'Five', 5, 'Six', 6]

Answer 2

In [124]: l=["Three","Four","Five","Six"]

In [125]: [x for x in itertools.chain(*zip(l, range(3,7)))]
Out[125]: ['Three', 3, 'Four', 4, 'Five', 5, 'Six', 6]