python之用python分析PRAW中的评论的问题

所以，我正在制作一个小型的 reddit 机器人，它只是在评论中搜索一个术语，但我得到了奇怪的结果。我是 python 的新手，所以这段代码可能有点困惑和不成熟。

#! /usr/bin/python 
 
import praw 
 
import pprint 
 
user_agent = ("simple praw script for searching post terms in comments by /u/shadowfire452") 
reddit = praw.Reddit(user_agent = user_agent) 
reddit.login() 
v_fixed = [] 
subreddit = reddit.get_subreddit('politics' and 'worldnews') 
 
for submission in subreddit.get_hot(limit = 100): 
    title = submission.title 
    if " " in title.lower():  
        v_fixed.append(title) 
print "The following %d posts might not make much sense ..." % (len(v_fixed)) 
for fixed in v_fixed: 
    print "\t%s" % (fixed) 
 
 
 
 
flat_comment_generator = praw.helpers.flatten_tree(submission.comments) 
 
for comment in flat_comment_generator: 
    if "you" in comment.body: 
        a = [] 
        commentz = comment.body 
        a.append(commentz) 
        print comment.body 
        print ("I found %s comments with 'you' in it out of 100 posts") % (len(a)) 
    else: 
           print "I found no comments with 'you' in it" 

当我运行它时，我得到:

I found 1 comments with ' ' in it out of 100 posts 
I found no comments with ' ' in it 
I found no comments with ' ' in it 
I found no comments with ' ' in it 
I found no comments with ' ' in it 

显然这是一个问题，因为我得到了相互矛盾的答案，并且对 1 个请求有 5 个回复。

请您参考如下方法:

import praw # simple interface to the reddit API, also handles rate limiting of requests 
import re 
from collections import deque  
from time import sleep 
 
USERNAME  = "" 
PASSWORD  = "" 
USERAGENT = "bot/1.0 by USERNAME" 
 
r = praw.Reddit(USERAGENT) 
r.login(USERNAME, PASSWORD) # necessary if your bot will talk to people 
 
cache = deque(maxlen = 200) # To make sure we don't duplicate effort 
 
# Set of words to find in the comment body. 
# I have changed this to a set. 
words = set(["these", "are", "the", "words", "to", "find"]) 
 
def word_check(comment_body, words): 
    # Will split the comment_body into individual words and check each for membership in words 
 
    # Split comment into words 
    comment_words = comment_body.split() 
 
    # Check each word for hot word and return True if found 
    for word in comment_words: 
        if word in words: 
            return True 
 
    # Return false if no words in words 
    return False 
 
def bot_action(comment, reply): 
    print "Body:", comment.body 
    print "Found word in:", comment.subreddit.display_name 
    comment.reply(reply) 
 
# Loop through comments 
running = True 
while running: 
    all = r.get_comments('politics', limit = None) 
    for comment in all: 
        # if comment id exists in cache, break 
        if comment.id in cache: 
            break 
        cache.append(comment.id) # cache already found comment id 
        # execute method for comment body and hotword(s) 
        if word_check(comment.body, words): 
            try: 
                # action the bot to reply 
                bot_action(comment, "Hello world") 
            except KeyboardInterrupt: 
                running = False 
            except praw.errors.APIException, e: 
                print "[ERROR]:", e 
                print "Sleeping for 30 seconds" 
                sleep(30) 
            except Exception, e: # In reality you don't want to just catch everything like this, but this is toy code. 
                print "[ERROR]:", e 
                print "Blindly handling error" 
                continue