python 实现插入排序算法

#!/usr/bin/python

def insert_sort(array):
for i in range(1, len(array)):
key = array[i]
j = i - 1
while j >= 0 and key < array[j]:
array[j + 1] = array[j]
j-=1

array[j + 1] = key

if __name__ == "__main__":
array = [2, 4, 32, 64, 34, 78, 23, 2345, 2345, 12, 1, 3]

insert_sort(array)
for a in array:
print a