Python

Python

#!/usr/bin/env python
#-*- coding:utf-8 -*-

def cumsum(t):
    res = []
    for i in range(1,len(t)+1):
        res.append(sum(t[:i]))
    print(res)
    return res

cumsum(t=[1,6,9])

 

##也可以改写成lamda表达式
t = [1,6,9]
res = list(map(lambda i:sum(t[:i]),range(1,len(t)+1)))
print(res)