作业五

#第一题
#print("特殊类型"+None)
#TypeError:must be str,not NoneType

#第二题
#numList=[6,10,19,20,23,45,50]
#print(numList[2]+numList[4])

#第三题
#fruitPrice=[20,35,40,10,65,80]
#print("苹果的价格是："+str(fruitPrice[2])+"元/千克")

#第四题
#a=["12","23",35,"45",89]
#b=[11,34,75,"54","78"]
#c=[]
#c.append(int(a[0])+b[0])
#c.append(int(a[1])+b[1])
#c.append(str(a[2])+str(b[2]))
#c.append(str(int(a[3])+int(b[3])))
#c.append(b[4]+str(a[4]))
#print(c)

#第五题
#a=[43,34,none,"break",12]
#print(a[0]+a[2NameError:name 'none' is not defined

#第六题
#a=["23",34,56,"print",None]
#b=int(a[0])+a[2]
#print(b)

#第七题
#import random
#a=["print","input","while","if","else","break","continue"]
#while True:
#    index=random.randint(0,6)
#    print(a[index])

#第八题
#a=["print","input","while","if","else","break","continue"]
#tmp=a[1]
#a[1]=a[5]
#a[5]=tmp
#print(a)