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。
