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December 30, 2015 15:58
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subreddit comment crawler
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| import sys | |
| import requests | |
| import json | |
| subreddit_name = sys.argv[1] | |
| output_file = open(sys.argv[2],'w') | |
| subreddit_address = 'http://reddit.com/r/'+subreddit_name+'.json' | |
| #default is front page, hot | |
| subreddit = requests.get(subreddit_address).json() | |
| subreddit_output = {} | |
| def parseRoot(node): | |
| node = node['data'] | |
| body_text = node['title'] | |
| if node['selftext'] != '': | |
| body_text = body_text + ': ' + node['selftext'] | |
| new_node = { | |
| 'name':node['name'], | |
| 'author':node['author'], | |
| 'parent_name':None, | |
| 'ups':node['ups'], | |
| 'downs':node['downs'], | |
| 'score':node['score'], | |
| 'created':node['created_utc'], | |
| 'body':body_text | |
| } | |
| return [new_node] | |
| def getChildren(node): | |
| if node['kind'] == 't1': | |
| node = node['data'] | |
| new_node = { | |
| 'name':node['name'], | |
| 'author':node['author'], | |
| 'parent_name':node['parent_id'], | |
| 'ups':node['ups'], | |
| 'downs':node['downs'], | |
| 'score_hidden':node['score_hidden'], | |
| 'created':node['created_utc'], | |
| 'body':node['body'] | |
| } | |
| node_list = [new_node] | |
| if node['replies'] != '': | |
| for child in node['replies']['data']['children']: | |
| new_children_list = getChildren(child) | |
| if new_children_list is not None: | |
| node_list = node_list + new_children_list | |
| return node_list | |
| for child in subreddit['data']['children']: | |
| t3 = child['data'] | |
| if t3['num_comments'] > 0: | |
| print 'getting '+ t3['id'] + ': ' + t3['title'] | |
| comment_thread = requests.get('http://www.reddit.com'+t3['permalink']+'.json'+'?sort=random').json() | |
| comment_list = []; | |
| for child in comment_thread[0]['data']['children']: | |
| if child['kind'] == 't3': | |
| #this is the root node | |
| comment_list = comment_list + parseRoot(child) | |
| for child in comment_thread[1]['data']['children']: | |
| new_children_list = getChildren(child) | |
| if new_children_list is not None: | |
| comment_list = comment_list + new_children_list | |
| subreddit_output[t3['id']] = comment_list | |
| json.dump(subreddit_output,output_file) |
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