DiscordのwebhookにEmbedデータを送る

import glob,re,sqlite3,os,ssl,json,datetime,time
import requests

webhook_url = '＜https://discordapp.com/api/webhooks/～チャンネルに設定したWebHookのURL＞'
conn = sqlite3.connect("/media/pi/iwaiwadata/hoge.db")
conn.text_factory = str
csr = conn.cursor()

#無視するユーザー名、ユーザーid
ignoreUsernames = ['','','','']
ignoreUserids = ['9999999','1234567']

#36時間前
timedelta       = datetime.timedelta(hours=36)
dtnow           = datetime.datetime.now()
beforedate      = dtnow - timedelta
after_postdate  = beforedate.strftime('%Y-%m-%d %H:%M:%S')
csr.execute('select * from videoinfo WHERE fav > 259 AND postdate > "'+ after_postdate +'"  ORDER BY postdate ASC')
pickupvids = csr.fetchall()

infocount = 0
if(pickupvids is None):
    quit

for col in pickupvids:
    videoUrl    = "https://特定動画サイト/videos/" + str(col[0])
    fav         = str(col[2])
    views       = str(col[3])
    userid      = str(col[4])
    username    = str(col[5])
    userurl     = str(col[6])
    title       = str(col[7])
    postdate    = str(col[8])
    title       = title.replace('　','\u3000').replace('\\','￥').replace('/','／').replace('|','｜').replace('>','＞').replace('<','＜')
    title       = title.replace('*','＊').replace('?','？').replace(':','：').replace('"','”')
    title       = re.sub(" +",' ',title)
    title       = re.sub("^ ",'',title)
    title       = re.sub(" $",'',title)
    title       = re.sub('\u200E','',title)
    postdate    = re.sub(":00$","",postdate)

    if((username not in ignoreUsernames)and(userid not in ignoreUserids)):
    #投稿するEMBEDなJSONデータ作成
        main_content = {
            "content": "",
            "embeds": [
                {
                    "author": {
                        "name": username ,
                        "url": userurl
                    },
                    "title": title ,
                    "url": videoUrl ,
                    "fields": [
                        {
                            "name": "postdate / views / favo",
                            "value": postdate +" :eye:" + views + " :heart:" + fav,
                            "inline": True
                        }
                    ],
                    "color": 5620992
                    }
                ]
            }
        if(infocount == 0):
            #初回のみrequests.postでWebhookへ最初の1文送る
            requests.post(webhook_url,json.dumps({"content": "36時間以内の投稿より、:heart:260以上の作品をピックアップします"}),headers={'Content-Type': 'application/json'})
            time.sleep(5)
        #requests.postでWebhookへEMBEDデータ送る
        requests.post(webhook_url,json.dumps(main_content),headers={'Content-Type': 'application/json'})
        time.sleep(10)
        infocount = infocount + 1