python题目

 

1、计算1--100的和：

>>> n=0
>>> for x in range(101):
... n=x+n
...
>>> print(n)
5050
>>>

 

2、计算1---500内的奇数和：

>>> for x in range(501):
... if x%2 != 0:
... n=x+n
...
>>> print(n)
62500

 

3.      求1+ 2! + 3! + 4! + ……20！的和

#python2.6中

n=20

print reduce(lambda x,y:x*y, range(1,n+1))

 

4. 对指定一个list进行排序[2,32,43,453,54,6,576,5,7,6,8,78,7,89]

>>> list_1=[2,32,43,453,54,6,576,5,7,6,8,78,7,89]
>>> list_1.sort()
>>> list_1
[2, 5, 6, 6, 7, 7, 8, 32, 43, 54, 78, 89, 453, 576]