RedditRipper

#Import the modules
import os, requests, json, urllib.request, sys

#Header
print("RedditRipper version 2 by Grifter")
print("~~~~~~~~~~~~~~~~~~~~~~~")
print(" ")

#UserAuth
username = input('Reddit username: ')
password = input('Password: ')
try:
    print("Attempting authentication....")
    user_pass_dict = {'user': username,
              'passwd': password,
              'api_type': 'json'}
    s = requests.Session()
    s.headers.update({'User-Agent' : 'Image link acquirer : ' + username})
    r = s.post(r'http://www.reddit.com/api/login', data=user_pass_dict)
    print("Authentication succesful")
except:
    print('Authentication failed')
    input()
    sys.quit()

#Global variables
subreddit= input('Which subreddit? reddit.com/r/')
count = 0
ids = []


#Check local save directory existence
if not os.path.exists(subreddit):
    os.makedirs(subreddit)

# Get the feed
r = requests.get(r'http://www.reddit.com/r/%s/.json?limit=100' %subreddit)

# Convert it to a Python dictionary
data = r.json()

#Request-download iterations
while True:

    #Request json packet
    if count != 0:
        idnext = str(ids[count-1])
        r = requests.get(r'http://www.reddit.com/r/%s/.json?limit=100&after=t3_%s' %(subreddit,idnext))
    else:
        r = requests.get(r'http://www.reddit.com/r/%s/.json?limit=100' %subreddit)

    #Convert Json packet to python data
    data = r.json()

    #Iterate downloads
    for child in data['data']['children']:
        count += 1

        #Record id for json request reference & filenames
        ids.append( child['data']['id'])

        #Determine imgur domain
        if child['data']['domain'] == 'imgur.com' or child['data']['domain'] == 'i.imgur.com':

            #Differentiate filetypes
            if child['data']['url'][-3:] == 'gif':
                try:
                    urllib.request.urlretrieve (child['data']['url'], subreddit +'\\'+child['data']['id']+'.gif')
                    print(count)
                except:
                    print(str(count) + " error")
            else:
                try:
                    urllib.request.urlretrieve (child['data']['url']+'.png', subreddit +'\\'+child['data']['id']+'.png')
                    print(count)
                except:
                    print(str(count) + " error")