downloader.py

import requests
import os
from re import finditer

headers = {"User-Agent":"Mozilla/5.0 (Windows NT 6.1; Win64; x64) But it's actually python cuz i'm bored"}

def html_get(url):
    r = requests.get(url, headers=headers)
    return r.text

search_name = input("Name of manga : ")
search_html = html_get("http://mangakakalot.com/search/" + search_name.replace(' ', '_'))
found_iter = finditer('item-name', search_html)

links = []
for iteration in found_iter:
    index = iteration.start() + 21
    url = ""
    while search_html[index] != '"':
        url += search_html[index]
        index += 1
    links.append(url)

if len(links) == 0:
    print("None of that name found")
    input("Press Enter to exit")
    exit()

for i, url in enumerate(links):
    print("{} : {}".format(i + 1, url.replace("_", " ")[30:]))
user_input = int(input("Which one is the correct one? [1 : {}] : ".format(len(links))))
#print(user_input)
#print(links[user_input - 1])
url_link = links[user_input - 1]

manga_name = links[user_input - 1].replace("_", " ")[30:].title()

if not os.path.exists(manga_name):
    os.makedirs(manga_name)
os.chdir(manga_name)

#url_link = input("Link to the manga [mangakakalot.com / manganelo.com source] : ")
chapter_link = url_link[::-1].replace('/agnam/', '/retpahc/', 1)[::-1]
html = html_get(url_link)
index = html.find('div class="row">')
html = html[index:]
#print(chapter_link)

found_iter = finditer(chapter_link, html)

chapter_links = []
for iteration in found_iter:
    index = iteration.start() + len(chapter_link)
    url = chapter_link
    while html[index] != '"':
        url += html[index]
        index += 1
    #print(url)
    chapter_links.append(url)
chapter_links = list(reversed(chapter_links))

print("Preparations complete")
print("Chapters like 2.5 count as one just so you know")
print("But the folders' chapter number will be fitting to the chapter")
f_ch = int(input("From Chapter [{} is Last] : ".format(len(chapter_links))))
t_ch = int(input("Till Chapter : "))

for i in range(f_ch, t_ch + 1):
    ch_link = chapter_links[i - 1]
    html = html_get(ch_link)

    index = html.find('<div class="vung-doc" id="vungdoc">')
    index = html.find('1.jpg', index) - 1
    sub_url = ""
    while html[index] != '"':
        sub_url += html[index]
        index -= 1
    sub_url = sub_url[::-1]

    Chapter_name = chapter_links[i-1][len(chapter_link) + 1:].replace("_", " ").title()

    if not os.path.exists("{}".format(Chapter_name)):
        os.makedirs("{}".format(Chapter_name))
    os.chdir("{}".format(Chapter_name))

    nr = 1
    s = 2
    while True:
        r = requests.get("{}{}.jpg".format(sub_url, nr), headers=headers)
        if r.status_code == 404:
            break
        with open("{}{}.jpg".format("0" * s, nr), "wb") as img_obj:
           img_obj.write(r.content)
        print("Done with {} Page {}".format(Chapter_name, nr))
        nr += 1
        if nr == 10 or nr == 100:
            s -= 1
    os.chdir("..")

input("Done\a")