Python第八章课后作业（函数）

8-1 消息：def display_message():
print("I learn function in this chapter")

display_message()运行结果：



8-2 喜欢的图书：def favorite_book(bookname):
print("One of my favorite books is "+bookname.title())

favorite_book("Alice in Wonderland")
运行结果：




8-3 T恤：def make_shirt(size,word):
print("size:",size,"\nword:",word)
make_shirt(100,'good')
make_shirt(size=100,word='good')运行结果：



8-4 大号T恤：def make_shirt(size,word='I love Phthon'):
print("size:",size,"\nword:",word)
make_shirt('L')
make_shirt('M')
make_shirt('S',word='good')运行结果：



8-5 城市：
def describe_city(city,country='China'):
print(city,'is in',country)
describe_city("Guangzhou")
describe_city("Shenzhen")
describe_city('NewYork','America')运行结果：



8-6 城市名：def city_country(city,country):
return city.title()+","+country.title()#也可以返回两个值，类型是元组
print(city_country("Guangzhou",'China'))
print(city_country('Shenzhen','China'))
print(city_country('newYork','america'))运行结果：



8-7 专辑：def make_album(singer,album,num=0):
res={"singer":singer,"album":album}
if num!=0:
res['num']=num
return res
print(make_album('Jaychou','qinghuaci'))
print(make_album('zhangjie','taiyang'))
print(make_album('lironghao','libai',3))
运行结果：



8-8 用户的专辑：def make_album(singer,album,num=0):
res={"singer":singer,"album":album}
if num!=0:
res['num']=num
return res

while True:
singer=input('Please input the singer name,if your want to quit,input quit:\n')
if singer=='quit':
break
album=input('Please input the album name,if your want to quit,input quit:\n')
if album=='quit':
break
num=input('Please input the number of songs,if your want to quit,input quit:\n')
if num=='quit':
break
print(make_album(singer,album,int(num)))运行结果：



8-9 魔术师：def show_magicians(arr):
print(arr)
arr=['ksb','lmd','hyk']
show_magicians(arr)运行结果：



8-10 了不起的魔术师：def show_magicians(arr):
print(arr)
arr=['ksb','lmd','hyk']
show_magicians(arr)

def make_great(arr):
for x in range(len(arr)):
arr[x]='the Great '+arr[x]

make_great(arr)
show_magicians(arr)运行结果：



8-11 不变的魔术师：def show_magicians(arr):
print(arr)

def make_great(arr):
for i in range(len(arr)):
arr[i]='the Great '+arr[i]
return arr

arr=['ksb','lmd','hyk']
show_magicians(arr)
show_magicians(make_great(arr[:]))
show_magicians(arr)运行结果：



8-12 三明治：def sandwich(*sands):#任意元素数量的元组
print(sands)
sandwich('apple','banana','orange')
sandwich('apple','orange')
sandwich('orange')运行结果：



8-13 用户简介：def build_profile(first,last,**usr_info):#任意数量键值对的字典
profile={}
profile["fist name"]=first
profile["last name"]=last
for key,value in usr_info.items():
profile[key]=value
return profile
#传递键值对时用下面的形式，键会自动转换为字符串有点意外
user_profile=build_profile('Ke','Sibo',sex='male',height='170cm')
for key,value in user_profile.items():
print(key+":"+value)运行结果：



8-14 汽车：def make_car(mader,number,**usr_info):#任意数量键值对的字典
profile={}
profile["mader".title()]=mader
profile["number".title()]=number
for key,value in usr_info.items():
profile[key]=value
return profile
#传递键值对时用下面的形式，键会自动转换为字符串有点意外
user_profile=make_car('China','6',color='red',decoration='windows')
for key,value in user_profile.items():
print(key+":"+value)运行结果：



8-15略
8-16 导入:
分别去掉注释符号即可
在模块myfunc中：def myprint():
print('hhh')在其他模块中调用：# import myfunc
# myfunc.myprint()

# from myfunc import myprint
# myprint()

# from myfunc import myprint as mp
# mp()

# import myfunc as mf
# mf.myprint()

# from myfunc import *
# myprint()运行结果：



8-17 略