Python tutorial

Suni_ Ing 2020-11-16 18:58:45
python tutorial


Statement :

1. This tutorial and its related derivatives are for personal learning only python、 Research python Or enjoy it python, And other non-commercial or non-profit uses . so , Any risk or even legal liability arising from the use of this tutorial and its related derivatives shall be borne by the user himself .

2. This tutorial does not provide the relevant website connection method .

3. Beginners Python, I hope you can point out the shortcomings .

Running environment :python3  Relevant third-party libraries are installed by themselves

The configuration file :

first line :Cookie

The second line : Download path

The third line : Minimum download delay time [ second ]

In the fourth row : Maximum download latency [ second ]

principle : Create a list of links , Set timeout , Regular expressions match step by step

Code :

from requests.adapters import HTTPAdapter
from fake_useragent import UserAgent
from requests_toolbelt import SSLAdapter
import os,time,random,re
import requests,ssl,chardet
# edition :1.0
# This script is suitable for downloading comics , If the number of pages downloaded is extremely large, it may be incomplete .
# Support to continue downloading from the last interruption . Multi page comics only need to input the link to the front page of comics .
ua = UserAgent()
Cookies = None
TargetPath = None
MinTime = None
MaxTime = None
urlHead='https://exhentai.org/g/'
def ReadConfig():# Read configuration file function 
global Cookies,TargetPath,MinTime,MaxTime
path = input(' Configuration file absolute path [ You can drag it in ]:')
if not os.path.exists(path):
ReadConfig()
return
try:
fileHandler = open(path,"r")
listOfLines = fileHandler.read().splitlines()
fileHandler.close()
except:
ReadConfig()
return
Cookies = listOfLines[0]
TargetPath = listOfLines[1]
MinTime = int(listOfLines[2])
MaxTime = int(listOfLines[3])
def DlComic(Url,dlPath):# Parse the link and download the image 
global ua,Cookies,MinTime,MaxTime
DlPage = requests.Session()
DlPage.mount('https://', HTTPAdapter(max_retries=5))
DlPage.mount('https://', SSLAdapter(ssl.PROTOCOL_TLSv1_2))
response = DlPage.get(Url,headers = {'Cookie':Cookies,'User-Agent':ua.random},timeout = 5).content
encode_type = chardet.detect(response)
pageStr = response.decode(encode_type['encoding'])
imgTUrl =str(re.findall(r'(?<=<img id="img" src=").*?(?=")',pageStr)[0])
time.sleep(random.uniform(MinTime,MaxTime)) # Time delay 
DlImg = requests.Session()
DlImg.mount('https://', HTTPAdapter(max_retries=5))
DlImg.mount('https://', SSLAdapter(ssl.PROTOCOL_TLSv1_2))
response = DlImg.get(imgTUrl,headers = {'User-Agent':ua.random},timeout = 120)
with open(dlPath, 'wb') as f:
f.write(response.content)
f.flush()
print('succeed')
def getImgList(Urls,title):# Get a list of image links 
global TargetPath,ua,Cookies
IsError = False
imgList = []
for Url in Urls:
DlPage = requests.Session()
DlPage.mount('https://', HTTPAdapter(max_retries=5))
DlPage.mount('https://', SSLAdapter(ssl.PROTOCOL_TLSv1_2))
page = DlPage.get(Url,headers = {'Cookie':Cookies,'User-Agent':ua.random},timeout = 5).content
encode_type = chardet.detect(page)
pageStr = page.decode(encode_type['encoding'])
imgUrls = re.findall(r'https\:\/\/exhentai\.org\/s\/\w{1,}\/[\w\-]{1,}',pageStr)
imgList.extend(imgUrls)
Numl = len(imgList)
print(' common ' + str(Numl) + ' page ')
dlDir = TargetPath + title + '\\'
if not os.path.exists(dlDir):
os.mkdir(dlDir)
for item in range(int(Numl)):
print(' ' + str(item+1) + "/" + str(Numl) + " >>> " + imgList[item],' >>> ',end = '')
try:
if not os.path.exists(dlDir + str(item) + '.jpg'):
DlComic(imgList[item] , dlDir + str(item) + '.jpg' )
else:
print('done')
except Exception as e:
print('Error' + str(e))
IsError = True
for i in range(10):
try:
if IsError:
print(' ' + str(item+1) + " ReDl >>> " + str(i) + ' >>> ',end = '')
DlComic(imgList[item] , dlDir + str(item) + '.jpg' )
IsError = False
except:
IsError = True
def getPageList(Url):# Analyze the cartoon home page and get ’ all ‘ Page link 
global ua,Cookies
if (Url.find('https://exhentai.org/g/') != -1):
DlPage = requests.Session()
DlPage.mount('https://', HTTPAdapter(max_retries=5))
page = DlPage.get(Url,headers = {'Cookie':Cookies,'User-Agent':ua.random}).content
encode_type = chardet.detect(page)#<a href="https://exhentai.org/g/1765318/5c795f0010/?p=1" onclick="return false">2</a>
page = page.decode(encode_type['encoding'])
subPageUrls = re.findall(r'https\:\/\/exhentai\.org\/g\/\w{1,}\/[\w\-]{1,}\/\?p=\d{1,}\" onclick=\"return false\">\d{1,}',page)
subPageUrls = re.findall(r'https\:\/\/exhentai\.org\/g\/\w{1,}\/[\w\-]{1,}\/\?p=\d{1,}', "','".join(subPageUrls))
subPageUrls = subPageUrls[0:int(len(subPageUrls)/2)]
subPageUrls.insert(0,Url)
titleStr = str(re.findall(r'(?<=<title>).*?(?=</title>)',page)[0])
titleStr = titleStr.replace("|","").replace("*","").replace("?","").replace("<","").replace(">","").replace(":","").replace("\\","").replace("/","").replace("&","").replace(";","")
if len(titleStr)>255:
titleStr = titleStr[0:255]
print(' >>> analysis >' + titleStr)
getImgList(subPageUrls,titleStr)
else:
print('>>> Wrong site link '+Url)
def main():# read configuration file , Enter and backup the link to the front page of the cartoon to download 
print('\nExhentai Downloader >>> developer :Suni_ing\n disclaimer :\n The content provided in this script is for personal learning only python、 Research python Or enjoy it python, And other non-commercial or non-profit uses .\n so , Any risk or even legal liability arising from the use of this script shall be borne by the user himself .\n')
print(' About profiles :\n first line :Cookie\n The second line : Download path \n The third line : Minimum download delay time [ second ]\n In the fourth row : Maximum download latency [ second ]\n')
ReadConfig()
urls = []
inpStr = '>>> Please enter the link >>> Enter blank content to end >>> '
url = input(inpStr)
while url != "":
urls.append(url)
url = input('>>> Link list of '+ str(len(urls)) + inpStr)
print('>>> End of input ')
f = open("url.txt",'a')
f.write('--->>>\n')
for item in urls:
f.write(item + '\n')
f.close()
if(len(urls) > 0):
for item in range(len(urls)):
print(str(item+1) + '/' + str(len(urls)),end = '')
getPageList(urls[item])
else:
print('>>> End of run ',end='')
main()
main()
版权声明
本文为[Suni_ Ing]所创,转载请带上原文链接,感谢

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