Python：加入两个列表

Question

如何通过交替使用元素来组合两个列表。例如：给定两个列表[＆＃39; a＆＃39;＆＃39; b＆＃39;，＆＃39; c＆＃39;]和[1,2,3,4]，该函数应返回[a，1，b，2，c，3,4]

Answer 1

a = [1, 2, 3, 4]
b = ['a','b','c'] 

result = [item for sublist in zip(a,b) for item in sublist]

print result