为什么我的Python机器人有时发布一次太多？

Question

我写了一个从Reddit获取帖子并将其发布到Twitter帐户的机器人。但是有时-我不知道为什么-它连续发布两次，而不是每3小时发布一次。我怀疑是因为我做了这样的事情：

do stuff:
    if stuff doesnt already exist:
        do other stuff
    else:
        do stuff

而且我真的认为这是一种不好的做法，但是我无法弄清楚如何让它无限循环地运行，但是仍然尝试获取以前尚未发布的帖子。

我在代码中有两点，在检查时我会“重新运行”整个代码。一种是从reddit提取的帖子不是图像时，另一种是之前已提取的帖子已经发布（并存储在json文件中以进行确切检查）。

我希望有人明白我的意思，谢谢。

import time
import tweepy
import datetime
import praw
import urllib.request
import os
import json


def Mainbot():
    reddit = praw.Reddit(client_id='X',
                          client_secret='X',
                          user_agent='RedditFetchBot by FlyingThunder')

    def Tweet(postinfo):
        auth = tweepy.OAuthHandler("X", "X")
        auth.set_access_token("X", "X")
        api = tweepy.API(auth)
        try:
            api.update_with_media("local-filename.jpg", postinfo)
        except:
            print("not a file post")
            Mainbot()            #check 1


    post = reddit.subreddit('okbrudimongo').random()
    x = post.id

    with open('data.json', 'r') as e:
        eread = e.read()
        if x not in eread:
            with open('data.json', 'a') as f:
                json.dump(x, f)
                f.close()
                e.close()
        else:
            e.close()
            print("already posted")
            Mainbot()      #check 2

    print(post.url + " " + post.title)
    urllib.request.urlretrieve(post.url, "local-filename.jpg")
    Tweet(postinfo=post.title+" (https://www.reddit.com" + post.permalink+")")
    try:
        time.sleep(5)
        os.remove("local-filename.jpg")
    except:
        print("Datei nicht vorhanden")

def loop():
    time.sleep(1800)
    print("still running")
    print(datetime.datetime.now())

while True:
    Mainbot()
    loop()
    loop()
    loop()
    loop()
    loop()
    loop()

顺便说一句，这是它给的回信-我进行了打印检查以查看出了什么问题，在这里您可以看到它两次发布时的内容

still running
2019-09-24 13:27:23.437152
still running
2019-09-24 13:57:23.437595
already posted
https://i.redd.it/xw38s1qrmlh31.jpg Führ Samstag bai ihm
https://i.redd.it/nnaxll9gjwf31.jpg Sorri Mamer
still running
2019-09-24 14:27:39.913651
still running
2019-09-24 14:57:39.913949
still running
2019-09-24 15:27:39.914013

Answer 1

我发现的解决方案（我仍然不完全了解是什么机制导致了该错误）：

import time
import tweepy
import datetime
import praw
import urllib.request
import os
import json


def Mainbot():
    reddit = praw.Reddit(client_id='m1E7pmr6Lha-ZQ',
                          client_secret='jphxVmNXhcGv_pl4fLjiL65GoUg',
                          user_agent='RedditFetchBot by FlyingThunder')

    def Tweet(postinfo):
        auth = tweepy.OAuthHandler("AggY2XJMVKasb1t0N1SszCnvC", "UieIGakl70k6kTLkjJiIezvrmPlnFnGzsNRInGzfkR5HvXZA1d")
        auth.set_access_token("1169529991912206336-9BpmvxEJC3fJLMH09vVJ6Wp4lgvSaU",
                              "SetVgrMpw71GEU7KnZvSB04EgyPa70b5Xy8Dlozyrflj3")
        api = tweepy.API(auth)
        try:
            api.update_with_media("local-filename.jpg", postinfo)
        except:
            print("not a file post"+post.permalink)
            Mainbot()


    post = reddit.subreddit('okbrudimongo').random()
    x = post.id

    with open('data.json', 'r') as e:
        eread = e.read()
        if x not in eread:
            with open('data.json', 'a') as f:
                json.dump(x, f)
                f.close()
                e.close()
                print(post.url + " " + post.title)
                urllib.request.urlretrieve(post.url, "local-filename.jpg")
                Tweet(postinfo=post.title + " (https://www.reddit.com" + post.permalink + ")")
                try:
                    time.sleep(5)
                    os.remove("local-filename.jpg")
                except:
                    print("Datei nicht vorhanden")
        else:
            e.close()
            print("already posted")
            Mainbot()
def loop():
    time.sleep(1800)
    print("still running")
    print(datetime.datetime.now())

while True:
    Mainbot()
    loop()
    loop()
    loop()
    loop()
    loop()
    loop()