Python 查找list中的某个元素的所有的下标方法

#!/usr/bin/env python
#_*_ coding:utf-8 _*_
name = ['hello', 'world', 'a', 'b', 'c', 1, 2, 3, 'hello', 'world', 'a', 'b', 'c', 1, 2, 3]
first_pos = 0
for i in range(name.count(2)):
 new_list = name[first_pos:]
 next_pos = new_list.index(2) + 1
 print 'find ', first_pos + new_list.index(2)
 first_pos += next_pos