poython中求列表的最大值、最小值、求和和平均值

 

1、

>>> a = [20,10,50,40,30] >>> max = a[0] >>> for i in a: if i > max: max = i >>> print(max) 50
>>> min = a[0] >>> for i in a: if i < min: min = i >>> print(min) 10
>>> sum = 0
>>> for i in a: sum += i >>> print(sum) 150
>>> 
>>> print(sum/len(a)) 30.0
del max
del min

 

2、

>>> a = [20,50,30,10,60,40] >>> max(a) ##最大值 60
>>> min(a) ## 最小值 10
>>> sum(a) ## 求和 210
>>> sum(a)/len(a) ## 求平均值 35.0