changing Reddit image and adding arg support

Author: Cam Davidson-Pilon

Chapter4_TheGreatestTheoremNeverTold/LawOfLargeNumbers.ipynb

@@ -1,18 +1,26 @@
+import sys
+
 import numpy as np
 from IPython.core.display import Image
 
-
 import praw
 
 
 reddit = praw.Reddit("BayesianMethodsForHackers")
 subreddit  = reddit.get_subreddit( "pics" )
 
 top_submissions = subreddit.get_top()
-top_submission = top_submissions.next()
-while "i.imgur.com" not in top_submission.url:
-    #make sure it is linking to an image, not a webpage.
+
+
+n_pic = int( sys.argv[1] ) if sys.argv[1] else 1
+
+i = 0
+while i < n_pic:
     top_submission = top_submissions.next()
+    while "i.imgur.com" not in top_submission.url:
+        #make sure it is linking to an image, not a webpage.
+        top_submission = top_submissions.next()
+    i+=1
 
 print "Title of submission: \n", top_submission.title
 top_post_url = top_submission.url
@@ -34,6 +42,9 @@
 
 votes = np.array( [ upvotes, downvotes] ).T
 
+
+
+