Day7 Python学习笔记&关键注意点

 1 import math 
 2 import models 
 3 import views  
 4 
 5 print('hello')  
 6 
 7 def hello():     
 8 print(models.page)  
 9 hello()  
10 if __name__ == "__main__":     
11 views.test()

1 import math 
2 from models import page  
3 print('hello')  
4 
5 def hello():     
6 print(page)  
7 
8 hello()

1 import math  
2 from models import *      
3 print('hello')    
4 
5 def hello():      
6 test()    
7 
8 hello()

1 from models import test as m_test  
2 from views import test as v_test  
3 
4 m_test() 
5 v_test()

 1 title = 'Python ru men'
 2 price = 39.00
 3 author = "Peter"
 4 
 5 def search_book(title):
 6     print('Search the book key words {} book'.format(title))
 7 
 8 
 9 book = {
10     'title':'Python rumen',
11     'price':39.00,
12     'author':'Peter',
13     'search_book':search_book
14 }
15 
16 print(book['title'])
17 print(book.get('price',0.0))
18 book.get('search_book')('Python')

 1 import datetime
 2 
 3 class Book:
 4     def __init__(self,title,price,author,publisher,pubdate):
 5         self.title = title
 6         self.price = price
 7         self.author = author
 8         self.publisher = publisher
 9         self.pubdate = pubdate
10 
11     def __repr__(self):
12         return '<Book {} at 0x{}>'.format(self.title,id(self))
13 
14     def print_info(self):
15         print('The book information is as follows:')
16         print('title:{}'.format(self.title))
17         print('price:{}'.format(self.price))
18         print('author:{}'.format(self.author))
19         print('publisher:{}'.format(self.publisher))
20         print('pubdate:{}'.format(self.pubdate))
21 
22 
23 book1 = Book('C#',29.9,'Tom','Youpinketang',datetime.date(2016,3,1))   #A real object
24 
25 book1.print_info()