以Python形式将多个值插入列表

Question

我想转这个清单:

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

进入这一个:

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

我用这个代码(效果很好)来做到这一点:

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

但我想Python不会为此感到骄傲.这有更短的路吗？

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]

或者,使用itertools.chain:

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