老王Python-进阶篇4-面向对象第三节

一： 写一个网页数据操作类。完成下面的功能：

提示：需要用到urllib模块

get_httpcode()获取网页的状态码，返回结果例如：200,301,404等 类型为int

get_htmlcontent() 获取网页的内容。返回类型:str

get_linknum()计算网页的链接数目。

 1 class get_web_data():
 2     
 3     def __init__(self,url):
 4         self.url=url
 5     
 6     def get_httpcode(self,):
 7         new_code=urllib.urlopen(self.url).code
 8         return new_code
 9     
10     def get_htmlcontent(self):
11         content_1=urllib.urlopen(self.url).read()
12         return content_1
13     
14     def get_linknum(self):
15         num=urllib.urlopen(self.url).read()
16         return len(num.split('<a href='))-1
17 
18 if __name__=='__main__':
19     new_url=get_web_data('http://www.cnblogs.com/duyaya/')
20     
21     print new_url.get_httpcode()
22     print new_url.get_htmlcontent()
23     print new_url.get_linknum()

二：

class SchoolMember:
'''Represents any school member.'''
def __init__(self, name, age):
self.name = name
self.age = age
print '(Initialized SchoolMember: %s)' % self.name

def tell(self):
'''Tell my details.'''
print 'Name:"%s" Age:"%s"' % (self.name, self.age),

class Teacher(SchoolMember):
'''Represents a teacher.'''
def __init__(self, name, age, salary):
SchoolMember.__init__(self, name, age)
self.salary = salary
print '(Initialized Teacher: %s)' % self.name

def tell(self):
print 'Salary: "%d"' % self.salary

class Student(SchoolMember):
'''Represents a student.'''
def __init__(self, name, age, marks):
SchoolMember.__init__(self, name, age)
self.marks = marks
print '(Initialized Student: %s)' % self.name

def tell(self):
print 'Marks: "%d"' % self.marks

t = Teacher('Mrs. Shrividya', 40, 30000)
s = Student('Swaroop', 22, 75)

members = [t, s]
for member in members:
member.tell()

体会下这段代码，把结果的执行流程用自己的话写下。