Get some sweet images from reddit.com/r/EarthPorn (SFW)

get_earth.py

import json
import urllib2 as urllib
import sys

def get_urls(limit=5):
	'''Get the url and titles from /r/EarthPorn'''
	# This is the api endpoint for hot submissions in /r/EarthPorn
	api_url = 'http://www.reddit.com/r/EarthPorn/hot.json?limit=' + str(limit)
	# Let's store this in urlopen
	json_url = urllib.urlopen(api_url)
	# And load the recived JSON into a variable
	text = json.loads(json_url.read())

	# Get only the relevent data from the recived JSON
	links = text['data']['children']
	urls = dict()
	# Get the url and titles into a dictionry
	for i, val in enumerate(links):
		url = val['data']['url']
		# I've enconered few encoding error - no body want those
		try:
			title = val['data']['title']
		except:
			title = str(i + 1)
		# Make sure it's an actual image
		if url[-4] == '.':
			urls[title] = url
	return urls

def save_pictures(urls):
	'''Download each picture in the URLS dict and save it with the proper name and format'''
	for title, url in urls.items():
		# Filename = Index.format
		print 'Now Downloading: ' + title
		# Once again - godamn encoding errors
		try:
			filename = str(title) + '.' +str(url.split('.')[-1])
		except:
			continue
		with open(filename, 'wb') as file:
			file.write(urllib.urlopen(url).read())
	print 'Done.'

if __name__ == '__main__':
	if len(sys.argv) < 2 or not sys.argv[1].isdigit():
		url_dict = get_urls()
	elif int(sys.argv[1]) > 99:
		print 'Error: Maximum allowed is 100 images. Please try again.'
		sys.exit(1)
	else:
		url_dict = get_urls(int(sys.argv[1]))

	save_pictures(url_dict)