python homework ——the fifth week

9-1
class Restaurant():
""" 描述一个饭店"""
def _init_(self,name,c_type):
"""初始化饭店信息"""
self.name=name
self.type=c_type
def describe_res(self):
print("The restaurant's name is "+self.name+", and its type is "
+self.type)
def open_restaurant(self):
print("The restaurant is open")


res=Restaurant('a','Chinese food')
print(res.name)
print(res.type)
res.describe_res()
res.open_restaurant()


9-2
res1=Restaurant('b','Eng')
res2=Restaurant('c','Frh')
res3=Restaurant('d','Ita')
res1.describe_res()
res2.describe_res()
res3.describe_res()


9-4
class Restaurant():
""" 描述一个饭店"""
def _init_(self,name,c_type):
"""初始化饭店信息"""
self.name=name
self.type=c_type
self.num_served=0
def describe_res(self):
print("The restaurant's name is "+self.name+", and its type is "
+self.type)
def open_restaurant(self):
print("The restaurant is open")
def set_num_served(self,num):
self.num_served=num
def incre_num_served(self,inc):
self.num_served+=inc

res=Restaurant('a','chn')
print(res.num_served)
res.set_num_served(3)
print(res.num_served)
res.incre_num_served(5)

print(res.num_served)

9-6

class Restaurant():
""" 描述一个饭店"""
def _init_(self,name,c_type):
"""初始化饭店信息"""
self.name=name
self.type=c_type
self.num_served=0
def describe_res(self):
print("The restaurant's name is "+self.name+", and its type is "
+self.type)
def open_restaurant(self):
print("The restaurant is open")
def set_num_served(self,num):
self.num_served=num
def incre_num_served(self,inc):
self.num_served+=inc

class IceCreamStand(Restaurant):
def _init_(self,name,type):
super()._init_(name,type)
self.flavors=['banana','apple','pear']
def print_ices(self):
print('There are flavors as follows')
for flavor in self.flavors:
print(flavor)


ice=IceCreamStand('a','ice cream')

ice.print_ices()

9-13

from collections import OrderedDict
dict=OrderedDict()
dict['a']='111'
dict['b']='222'
dict['c']='555'
for key,value in dict.items():

print(key+' '+value)

10-1

filename='python_learning'
with open(filename) as f_obj:
learning=f_obj.read()
print(learning)
print('\n')

for line in f_obj:
print(line)

lines=f_obj.readlines()
for line in lines:
print(line)


10-2
with open('pythom_learning') as f_obj:
for line in f_obj:
line.replace('python','C')
print(line)

10-3

name=input('Please input your name:')
with open('guest.txt','w') as f_obj:
f_obj.write(name)

10-6
a=input('Input the first number:')
b=input('Input the second number')
try:
c=int(a)+int(b)
except TypeError:
print('You should input numbers')
else:
print(c)

10-11

num=input('Input your favorate number:')
file_name='num.json'
with open(file_name,'w') as f_obj:
json.dump(num,f_obj)


file_name='num.json'
with open(file_name) as f_obj:
num=json.load(f_obj)
print('I know Your Favorate number is ' + num)