python --Class的学习-提高代码重用性

最近在进行爬虫学习的总结，发现以前使用函数来将网站数据进行处理，对于不同网站代码重用性太小。改用python的Class来实现之后，代码的重用性提高了很多。
下面的代码是抓取书香阁小说后的将几个函数进行代码重构之后用于笔趣阁小说爬取，效果非常好。
代码如下：

#!/usr/bin/env python3
#coding:utf-8

import requests
from bs4 import BeautifulSoup
import os
import re
import sys
import json
import time
import datetime
from lxml import etree

# 书香阁
# url_totle = 'http://www.f96.net/11/11631/'
headers = {
    'User-Agent':'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.104 Safari/537.36 Core/1.53.5155.400 QQBrowser/9.7.13231.400'
}
cookies = {
    'Cookie':'UM_distinctid=164280145ca9d35-0b466517b9188d-354c7e51-1fa400-164280145da807; bookid=24868; chapterid=8680154; chaptername=%25u7B2C%25u4E8C%25u7AE0%2520%25u540E%25u6587%25u660E%25u65F6%25u4EE3; bcolor=; font=; size=; fontcolor=; width=; ASP.NET_SessionId=miy1tw45j1e2ir45kaepar55; m_uid=c96c79a4-0d6b-449d-8ae9-c535d0aa5708; member_username=fbl4869; CNZZDATA1261736110=527061289-1529674930-https%253A%252F%252Fwww.baidu.com%252F%7C1529674930; Hm_lvt_5ee23c2731c7127c7ad800272fdd85ba=1529679530; Hm_lpvt_5ee23c2731c7127c7ad800272fdd85ba=1529679954'
}

url_totle = 'https://www.qu.la/book/379/'
Domain = 'https://www.qu.la/'
Classify = 'book'
# Number = 11631   #盘龙
# Number = 24866   #圣墟
# print(type(Classify))
def GetHtmlCode(url):
    delay = 5
    while True:
        try:
            response = requests.get(url = url,cookies = cookies,headers = headers)
        except:
            continue
        if 200 == response.status_code:
            if 'ISO-8859-1' == response.encoding:
                response.encoding = 'gbk'
            return response.text
        else:
            print('请求失败，重新请求！')
            time.sleep(delay)
            delay = 2 * delay

def GetHtmlTree(url):
    HtmlCode = GetHtmlCode(url)
    HtmlTree = BeautifulSoup(HtmlCode,'html.parser')
    return HtmlTree

def GetChapterKeyContent(url):
    HtmlTree = GetHtmlTree(url)
    try:
        # ChapterContent = {}
        ContentTitle = HtmlTree.h1.text
        Content = HtmlTree.find('div',id = 'content').text
        return (ContentTitle,Content)
    except:
        return False

def SaveChapter(title,content):
    with open(title + '.txt','w',encoding='utf-8') as f:
        f.write(content)
        f.close()

def CombineChapter(Classify,Number,StoryName):
    Classify = str(Classify)
    Number = str(Number)
    cmd = []
    cmd.append('chcp 65001')
    cmd.append('mkdir ' + Classify + '\\' + Number)
    cmd.append('move /y ' + '*.txt ' + Classify + '\\' + Number)
    cmd.append('CombineChapter.bat ' + Classify + ' ' + Number + ' '+ StoryName)
    for line in cmd:
        print(line)
        os.system(line)

class Story(object):
    #创建一个实例的同时就会调用__init__方法，进行初始化，self是该实体的对象。
    def __init__(self,Domain,Classify,Number):
        if False == isinstance(Domain,str):
            print('Domain type Error!')
            exit
        if False == isinstance(Classify,str):
            print('Classify type Error!')
            exit
        if False == isinstance(Number,int):
            print('Number type Error!')
            exit
        self.Domain = str(Domain)
        self.Classify = str(Classify)
        self.Number = str(Number)
        if '/' != Domain[-1]:
            self.url = Domain + '/' + str(Classify) + '/' + str(Number) + '/'
        else:
            self.url = Domain + str(Classify) + '/' + str(Number) + '/'
        self.miss = 0
     #调用一个方法后，self属性就会随之变更，其他的所有方法会共用该属性
    def GetChapterList(self):
        HtmlTree = GetHtmlTree(self.url)
        StoryName = HtmlTree.h1.text
        # print(StoryName)
        self.StoryName = StoryName
        UlTag = HtmlTree.find('dl')
        LiTagList = UlTag.find_all('a')
        # print(LiTagList)
        ChapterHrefList = []
        for line in LiTagList:
            ChapterHref = int(line['href'].split('/')[-1].split('.')[0])
            ChapterHrefList.append(ChapterHref)
        # self.dict = ChapterDict
        # print(len(ChapterHrefList))
        ChapterHrefList = list(set(ChapterHrefList))
        # print(ChapterHrefList)
        ChapterHrefList.sort()
        tmp = []
        for line in ChapterHrefList:
            line = self.url + str(line) + '.html'
            tmp.append(line)
        # print(tmp)
        self.ChapterHrefList = tmp

    def GetChapterContent(self):
        for line in self.ChapterHrefList:
            ChapterKeyContent = GetChapterKeyContent(line)
            print(ChapterKeyContent[0])
            SaveChapter(ChapterKeyContent[0].replace(' ','-').replace('?','').replace('!','').replace('：',''),ChapterKeyContent[0] + ChapterKeyContent[1])
    def ChapterCombine(self):
        CombineChapter(self.Classify,self.Number,'Combine')
for Number in range(24503,24855,1):
    s1 = Story(Domain,Classify,Number)
    s1.GetChapterList()
    s1.GetChapterContent()
    s1.ChapterCombine()
    # os.system('del /q /s *.txt')

部分效果图：