Python 使用下载的图像更改windows背景的Reddit bot

到目前为止，我已经完成了浏览subreddit和在请求时下载顶级图像的大部分代码。我可以使用PRAW和urllib在获得链接后下载图片。最后一个让我难以忘怀的部分是将图像文件放入一个数组中，并实际将它们设置为我的背景。这是我的

import praw
import time
import os
import urllib as ul
import os    

def backGroundChanger(sub):

    USER_AGENT='wall paper changer for linux/windows by /u/**********' #specifies what my bot does and by who

    REDDIT_ID= #reddit id
    REDDIT_PASS= #reddit password

    reddit=praw.Reddit(USER_AGENT) #creates bot
    reddit.login(REDDIT_ID,REDDIT_PASS) #logsin
    print reddit.is_logged_in()
    images=reddit.get_subreddit(sub)


    while True:
        count=0
        for sub in images.get_hot(limit=10):
            imageLink=sub.url
            print imageLink
            n=str(count)
            ul.urlretrieve(imageLink, "i" + n )

            count+=1
        file=[]
        dir=os.getcwd()
        for files in os.listdir("."):
            if(files.endswith(".jpg|| .png"): # not sure if this will work
                file.append(files)

        changeBackGround(file,dir)


def changeBackGround(file, dir):
    #Do back ground changing stuff here


def main():
    subreddit=input("What subreddit would you like me to pull images from? ") 
    print "You chose " + subreddit
    backGroundChanger(subreddit)

main()

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这也许行得通，也许不行；这是未经测试的

阅读函数，了解使用系统程序设置后台的方法，如linux中的xsetbg。在这里查看windows背景的设置（它只涉及入侵注册表）

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谢谢，当我有空的时候，我会测试一下，让你知道。谢谢你的帮助！

import os
import glob
import random
import sys
import time
import urllib

import praw

def backGroundChanger(sub):

    USER_AGENT = 'wall paper changer for linux/windows by /u/**********' #specifies what my bot does and by who

    REDDIT_ID = #reddit id
    REDDIT_PASS = #reddit password

    reddit = praw.Reddit(USER_AGENT) #creates bot
    reddit.login(REDDIT_ID, REDDIT_PASS) #logsin
    print reddit.is_logged_in()
    images = reddit.get_subreddit(sub)

    while True:
    count = 0
    for sub in images.get_hot(limit = 10):
        imageLink = sub.url
        print imageLink
        n = str(count)
        urllib.urlretrieve(imageLink, "i" + n )

        count += 1

    files = glob.glob("*.jpg") + glob.glob("*.png")

    changeBackGround(files)


def changeBackGround(ifiles):
    #Do back ground changing stuff here
    the_file = ifiles[random.randint(0, len(ifiles) - 1)]
    if(sys.platform.startswith("win")): # Windows
        # Do this yourself
        pass
    elif(sys.platform.startswith("linux")): # Linux
        os.system("xsetbg -center %s" % the_file)

def main():
    subreddit = input("What subreddit would you like me to pull images from? ") 
    print "You chose " + subreddit
    backGroundChanger(subreddit)

main()