aternus ETA | Python Fiddle

#!/usr/bin/env python3
"""
calling this python3 with any rrl url as a parameter will check every 10 min whether the author note has changed or, (and the following isn't fool proof), if there is a new chapter. Made for Aternus ETAs
"""

import urllib.request
import sys, time, re

def chercher(url):
    """
    fetches the author note and the button next at the url
    """
    fp = urllib.request.urlopen(url)
    mybytes = fp.read()
    page = mybytes.decode("utf8")
    fp.close()

#boundaries of author note
    debut = page.find("portlet solid author-note-portlet\">") + 35
    fin = page.find("<div class=\"chapter-inner chapter-content")

#only if not found, then maybe new chapter
    suite = (page.find("<button class=\"btn btn-primary col-xs-4\" disabled=\"disabled\">Next") == -1)

return suite, page[debut:fin]

def main(url):
    compteur = 0
    suite, new = chercher(url)
    previous = new
    print(re.sub('<[^>]*>', '', new))
    print("+".join("-" for _ in range(40)))
    
    #we check the latest chapter regularly
    while previous == new and not suite:
 
        #please do not set lower time out of respect for royalroadl
        time.sleep(600)
        previous = new
        suite, new = chercher(url)
        compteur += 2
        print("{} min".format(compteur))
    if suite:
        #if there is a new chapter (not trollproof)
        print("<<<<<<< THERE MAY BE A NEW CHAPTER >>>>>>")
    else:
        #if the author note (hence the ETA) has changed
        print("<<<<<<< NEW AUTHOR NOTE >>>>>>")
        print(re.sub('<[^>]*>', '', new))

if __name__ == '__main__':
    if len(sys.argv) >1:
        main(sys.argv[1])
    else:
        main("http://royalroadl.com/fiction/8463/the-arcane-emperor/chapter/181151/chapter-98-demonic-dungeon")

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