##環境構築
###pythonのインストール
最新入れておけば大丈夫やんね

###統合開発環境のインストール
pycharm入れておけばいいやんね
とりあえずcommunity版にしよう

###google-api-python-clientを入れる
コマンドプロンプトでpythonインストールディレクトリ/Scriptsに移動
下記コマンド実行
pip install --upgrade google-api-python-client

##やってみる

pycharmでプロジェクトを作って下記のpythonファイルを作成
実行後コンソールに某youtuberの動画のタイトルが表示されれば成功

test.py

#!/usr/bin/python

import apiclient.discovery
import apiclient.errors
from googleapiclient.discovery import build
from oauth2client.tools import argparser

# Set DEVELOPER_KEY to the API key value from the APIs & auth > Registered apps
# tab of
#   https://cloud.google.com/console
# Please ensure that you have enabled the YouTube Data API for your project.
DEVELOPER_KEY = "AIzaSyDEgYLv8efN6VWgpC4KbDZfDr7WL0k-1oQ" 
YOUTUBE_API_SERVICE_NAME = "youtube" 
YOUTUBE_API_VERSION = "v3" 

def youtube_search(options):
  youtube = build(YOUTUBE_API_SERVICE_NAME, YOUTUBE_API_VERSION,
    developerKey=DEVELOPER_KEY)

  # Call the search.list method to retrieve results matching the specified
  # query term.
  search_response = youtube.search().list(
    q=options.q,
    part="id,snippet",
    maxResults=options.max_results
  ).execute()

  videos = []
  channels = []
  playlists = []

  # Add each result to the appropriate list, and then display the lists of
  # matching videos, channels, and playlists.
  for search_result in search_response.get("items", []):
    if search_result["id"]["kind"] == "youtube#video":
      videos.append("%s (%s)" % (search_result["snippet"]["title"],
                                 search_result["id"]["videoId"]))
    elif search_result["id"]["kind"] == "youtube#channel":
      channels.append("%s (%s)" % (search_result["snippet"]["title"],
                                   search_result["id"]["channelId"]))
    elif search_result["id"]["kind"] == "youtube#playlist":
      playlists.append("%s (%s)" % (search_result["snippet"]["title"],
                                    search_result["id"]["playlistId"]))

  print("Videos:\n", "\n".join(videos), "\n")
  print("Channels:\n", "\n".join(channels), "\n")
  print("Playlists:\n", "\n".join(playlists), "\n")

if __name__ == "__main__":
  argparser.add_argument("--q", help="Search term", default="ヒカル")
  argparser.add_argument("--max-results", help="Max results", default=25)
  args = argparser.parse_args()

  assert isinstance(args, object)
  youtube_search(args)

###追伸
ほぼ自分用メモですな