1211.zuoye

17.编写一个函数满足以下功能：

计算打印所有参数的和乘以基数（base=3）的结果
 16 def sum(*a):
 17     sum=0
 18     for i in a:
 19         sum+=i
 20     sum=3*sum
 21     return sum
 22 s=sum(3,4,5,6)
 23 print(s)
 24 

 

1.
[0,1]
[3,2,1,0,1,4])
[0,1,4]

 

2.l.sort是将列表l本身进行排序，且只能是列表，sorted是将序列进行排序，且生成新的序列。In [1]: t=(1,2,3,56,5,43,)                                                      

In [2]: t1=sorted(t)                                                            

In [3]: print(t)                                                                
(1, 2, 3, 56, 5, 43)

In [4]: print(t1)                                                               
[1, 2, 3, 5, 43, 56]


In [5]: l=[1,2,3,56,5,43,]                                                      

In [6]: l.sort()                                                                

In [7]: print(l)                                                                
[1, 2, 3, 5, 43, 56]

 

3.尝试用两个方式，分别用一行语句实现去除了中的相同项，将结果存放在l2列表中

l1 = ['b','c','d','b','c','a','a']
l2 = []

24 l=[i for i in range(101) if i%2==0]
 25 l1=[]
 26 for a in l:
 27     if a%4!=0 and a%6!=0:
 28         l1.append(a)

 

l2=list(set(l1)) [l2.append(i) for i in l1 if i not in l2]