QA3

import requests
from bs4 import BeautifulSoup
import urllib.request
import sys
from threading import Thread
import json
count = 1
threadnum = 0
files = []
def JsonWrite(file,alt):
    form = {'url':file, 'alt':alt}
    files.append(form)
def JsonWritefile():
    f = open('names.json','w')
    json.dump(files,f)
    f.close()
    print('Downloaded!!!')
    sys.exit()
def LoadImage(url,alt):
    global count
    filename = str(count)+'.png'
    count += 1

    url = "http:"+url
    f = open(filename,'wb')
    f.write(urllib.request.urlopen(url).read())
    f.close()
    JsonWrite(filename, alt)
    print("[+] {0} file loaded ({1})".format(filename,alt))
def GetPictures(link):
    global count, threadnum
    print('Started thread%i'%threadnum)
    req = requests.get(link)
    soup = BeautifulSoup(req.text,'html.parser')
    images = soup.find_all("img", {"class":"grow-rotate"})
    if len(images)==0:
        print('ZERO LENGTH')
    for image in images:
        LoadImage(image.attrs['src'],image.attrs['alt'])
    threadnum-=1
if __name__ == "__main__":
    if len(sys.argv)<2:
        print("Error: Type links 1-10 \n python scrapskins.py [link1] [link2] [link3] ...")
        sys.exit()
    for param in sys.argv[1:]:
        th = Thread(target=GetPictures, args=(param,))
        th.start()
        threadnum+=1
    while(threadnum!=0):
        pass
    JsonWritefile()