Upload local file to Telegram channel – Telegram API

I have a goal to do python script for checking new videos at yt channel then download and upload as audio to tg channel.
I’ve done first part with checking/downloading/converting (youtube_dl library) and don’t see how to do upload part. (there are telegram-upload, python-telegram-bot, telethon libraries but i don’t get which one and how I can apply for uploading files to channel)

# importing module
import youtube_dl
import urllib.request
import re

html = urllib.request.urlopen("https://www.youtube.com/c/peterschiff/videos")

#all videos ids from yt page
video_ids = re.findall(r"watch?v=(S{11})", html.read().decode())

  
ydl_opts = {
    'format': 'bestaudio/best',
    'postprocessors': [{
        'key': 'FFmpegExtractAudio',
        'preferredcodec': 'mp3',
        'preferredquality': '192',
    }]
}

#write all videos ids to local file 
txt_file = open('outfile.txt', 'r')
file_content = txt_file.read()
content_list = file_content.split()
txt_file.close()


x = video_ids
y = content_list

#get only new videos by comparing with local file
result = set(x) - set(y)

with open('outfile.txt', 'a') as outfile:
    outfile.write('n'.join(result))

#download new videos and convert to audio
def dwl_vid():
    with youtube_dl.YoutubeDL(ydl_opts) as ydl:
        ydl.download([zxt])
  

for item in result:
    video_one = 'https://www.youtube.com/watch?v=' + item
    zxt = video_one.strip()
    dwl_vid()