下面这段代码有bug，我调试不出来

Question

请问下面这段代码的bug在哪里
运行了几次无法完全运行
from urllib import request
from bs4 import BeautifulSoup
import re
import sys

if name == "main":
#创建txt文件
file = open('一念永恒.txt', 'w', encoding='utf-8')
#一念永恒小说目录地址
target_url = 'http://www.biqukan.com/1_1094/'
head = {}
head['User-Agent'] = 'Mozilla/5.0 (Linux; Android 4.1.1; Nexus 7 Build/JRO03D) AppleWebKit/535.19 (KHTML, like Gecko) Chrome/18.0.1025.166 Safari/535.19'
target_req = request.Request(url = target_url, headers = head)
target_response = request.urlopen(target_req)
target_html = target_response.read().decode('gbk','ignore')
listmain_soup = BeautifulSoup(target_html)
#找出div标签中class为listmain的所有子标签
chapters = listmain_soup.find_all('div',class_ = 'listmain')
download_soup = BeautifulSoup(str(chapters))
#计算章节个数
numbers = (len(download_soup.dl.contents) - 1) / 2 - 8
index = 1
begin_flag = False
for child in download_soup.dl.children:
if child != '\n':
#找到《一念永恒》正文卷
if child.string == u"《一念永恒》正文卷":
begin_flag = True
#爬取链接并下载链接内容
if begin_flag == True and child.a != None:
download_url = "http://www.biqukan.com" + child.a.get('href')
download_req = request.Request(url = download_url, headers = head)
download_response = request.urlopen(download_req)
download_html = download_response.read().decode('gbk','ignore')
download_name = child.string
soup_texts = BeautifulSoup(download_html)
texts = soup_texts.find_all(id = 'content', class_ = 'showtxt')
soup_text = BeautifulSoup(str(texts))
write_flag = True
file.write(download_name + '\n\n')
#将爬取内容写入文件
for each in soup_text.div.text.replace('\xa0',''):

                if each == 'h':
                    write_flag = False
                if write_flag == True and each != ' ':
                    file.write(each)
                if write_flag == True and each == '\r':
                    file.write('\n')
                print('正在写入第{0}小节'.format(index))
                index+=1
            file.write('\n\n')
            #打印爬取进度
            sys.stdout.write("已下载:%.3f%%" % float(index/numbers) + '\r')
            sys.stdout.flush()
            index += 1
file.close()

Answer 1

发代码时用工具栏的</>按钮格式化下，要不python没缩进没法看这个代码。。

#from urllib import request
from bs4 import BeautifulSoup
import re
import sys
import requests


#创建txt文件
file = open('一念永恒.txt', 'w', encoding='utf-8')
#一念永恒小说目录地址
target_url = 'http://www.biqukan.com/1_1094/'
head = {}
head['User-Agent'] = 'Mozilla/5.0 (Linux; Android 4.1.1; Nexus 7 Build/JRO03D) AppleWebKit/535.19 (KHTML, like Gecko) Chrome/18.0.1025.166 Safari/535.19'

target_html =requests.get(target_url,headers=head).content.decode('gbk')
print(target_html)
listmain_soup = BeautifulSoup(target_html,features="html.parser")
#找出div标签中class为listmain的所有子标签
chapters = listmain_soup.find_all('div',class_ = 'listmain')
download_soup = BeautifulSoup(str(chapters),features="html.parser")

#计算章节个数
numbers = (len(download_soup.dl.contents) - 1) / 2 - 8
index = 1
begin_flag = False
for child in download_soup.dl.children:
    if child != '\n':
    #找到《一念永恒》正文卷
        if child.string == "《一念永恒》正文卷":
            begin_flag = True
            #爬取链接并下载链接内容
        if begin_flag == True and child.a != None:
            download_url = "http://www.biqukan.com" + child.a.get('href')
            download_html = requests.get(download_url).content.decode('gbk','ignore')
            download_name = child.string
            soup_texts = BeautifulSoup(download_html,features="html.parser")
            texts = soup_texts.find_all(id = 'content', class_ = 'showtxt')
            print(texts)
            soup_text = BeautifulSoup(str(texts),features="html.parser")
            write_flag = True
            file.write(download_name + '\n\n')
            #将爬取内容写入文件
            for each in soup_text.div.text.replace('\xa0',''):

                if each == 'h':
                    write_flag = False
                if write_flag == True and each != ' ':
                    file.write(each)
                if write_flag == True and each == '\r':
                    file.write('\n')
                print('正在写入第{0}小节'.format(index))
                index+=1
            file.write('\n\n')
            #打印爬取进度
            sys.stdout.write("已下载:%.3f%%" % float(index/numbers) + '\r')
            sys.stdout.flush()
            index += 1
file.close()