1.变量交换数值
a = 1
b = 2
b,a = a,b
1.先把(a,b)封装成了一个元组 (1,2)
- b,a = a,b ===> b,a = (1,2)
- b = (1,2)[0] a =(1,2)[1]
print(a,b)
打印变量值
name = ‘westos’
age = 11
t = (name,age)
print(‘name:%s,age:%d’ %(name,age))
print(‘name:%s,age:%d’ %t) 直接用t代替name和age
元组的赋值:有多少个元素,就用多少个变量接收
t = (‘Westos’,10,100)
name,age,score = t
print(name,age,score)
排序
scores = (100,89,45,78,65)
先对元组进行转换(转换成列表)
scoreli = list(scores)
scoreli.sort()(对列表进行排序)
scorese=tuple(scoreli) (将列表变为元组)
print(scorese) (元组输出排序值)
scores_sort = sorted(scores)(对列表进行排序)
print(scores_sort)(列表输出排序)
python2中*middle不能使用的
min_score,*middle,max_score = scores
print(min_score,’~~’,max_score)(去掉一个最低分和最高分,取中间值)’,*middle, '
print(‘最终成绩为:%s’ %(sum(middle)/4))