如何检查文件是否已在缓存中？

Question

我正在开发一种工具，可以在你的 Twitter 帐户上发布来自游戏的 Ingame 新闻更新，在过去的几天里，我搜索了一种解决方案，以找到一种方法来查看图像是否已经在缓存中，这样它就不会再次发布如果一个游戏的 News Feed 更新在线，它应该只发布新的并跳过旧的（实际上它会再次发布每个活动的 News Feed），问题是做不到。我测试了大约 100 次，但它不起作用。我真的希望你们中的任何一个能帮助我解决这个问题，因为如果这个工具能与这样的方法一起工作，那就太棒了。提前感谢您的每一个帮助。这是我的代码：import tweepyimport timefrom colorama import *init()auth = tweepy.OAuthHandler('API', 'APISECRET')auth.set_access_token('ACESS', 'ACESSSECRET')response = requests.get('https://fortnite-api.com/v2/news/br')newsData = response.json()["data"]#-----footer = '#Fortnite'delay = 5saveImages = True#-----while 1:    response = requests.get('https://fortnite-api.com/v2/news/br')    if response:        newsDataLoop = response.json()["data"]        print("2 - Checking for change in news feed...")        if newsData != newsDataLoop:        #if loop == True:            print("News Feed has changed...")            for i in newsDataLoop["motds"]:                try:                    print("Saving: "+i["id"])                    url = i["image"]                    r = requests.get(url, allow_redirects=True)                    open("NewsImages/"+i["id"]+'.png', 'wb').write(r.content)                    print("Saved: "+i["id"])                    try:                        api = tweepy.API(auth)                        api.update_with_media("NewsImages/"+i["id"]+'.png',"Fortnite News Update:\n\n"+i["title"]+":\n"+i["body"]+"\n\n"+footer)                        print("Tweeted: "+i["id"])                    except:                        print("Failed to tweet: "+i["id"])                    if saveImages == 'False':                        os.remove("NewsImages/"+i["id"]+'.png')                    response = requests.get('https://fortnite-api.com/v2/news/br')                    newsData = response.json()["data"]                except:                    print("Error in tweeting news feed: skipping")            print("Finished news feed publishing")    else:        print("FAILED TO GRAB NEWS DATA: URL DOWN")    time.sleep(delay)

Answer 1

您需要检查每一个motd以查看它是否存在于旧数据集中。

import tweepy

import time

from colorama import *

init()

auth = tweepy.OAuthHandler('API', 'APISECRET')

auth.set_access_token('ACESS', 'ACESSSECRET')

response = requests.get('https://fortnite-api.com/v2/news/br')

newsData = response.json()["data"]

#-----

footer = '#Fortnite'

delay = 5

saveImages = True

#-----

while 1:

    response = requests.get('https://fortnite-api.com/v2/news/br')

    if response:

        newsDataLoop = response.json()["data"]

        print("2 - Checking for change in news feed...")

        if newsData != newsDataLoop:

        #if loop == True:

            print("News Feed has changed...")

            for i in newsDataLoop["motds"]:

                if i in newsData["motds"]:

                    # has already been posted

                    print("Already posted")

                    continue

                try:

                    print("Saving: "+i["id"])

                    url = i["image"]

                    r = requests.get(url, allow_redirects=True)

                    open("NewsImages/"+i["id"]+'.png', 'wb').write(r.content)

                    print("Saved: "+i["id"])

                    try:

                        api = tweepy.API(auth)

                        api.update_with_media("NewsImages/"+i["id"]+'.png',"Fortnite News Update:\n\n"+i["title"]+":\n"+i["body"]+"\n\n"+footer)

                        print("Tweeted: "+i["id"])

                    except:

                        print("Failed to tweet: "+i["id"])

                    if saveImages == 'False':

                        os.remove("NewsImages/"+i["id"]+'.png')

                    response = requests.get('https://fortnite-api.com/v2/news/br')

                    newsData = response.json()["data"]

                except:

                    print("Error in tweeting news feed: skipping")

            print("Finished news feed publishing")

    else:

        print("FAILED TO GRAB NEWS DATA: URL DOWN")

    time.sleep(delay)