import os main_fd = "作業用フォルダを書く" os.chdir(main_fd) from pytube import YouTube import csv #関数を定義 def download_youtube_video(url, output_folder): try: yt = YouTube(url) video = yt.streams.filter(file_extension="mp4", progressive=True).first() video.download(output_folder) print(f"Video {yt.title} down…