Сохранение данных API YouTube в Python

Я новичок в питоне. Я использовал youtube api для получения данных с youtube. Теперь я пытаюсь сохранить данные в формате csv, но получаю сообщение об ошибке:

NameError: имя «search_response» не определено. Я не знаю, что я делаю неправильно, или здесь есть проблема с установкой пакета.

Я использую python 3.6.3 и следующий код:

# -*- coding: utf-8 -*-

from apiclient.discovery import build
#from apiclient.errors import HttpError
#from oauth2client.tools import argparser # removed by Dongho
import argparse
import csv
import unidecode

# 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 = " "
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 = []

    # create a CSV output for video list    
    csvFile = open('video_result.csv','w')
    csvWriter = csv.writer(csvFile)
    csvWriter.writerow(["title","videoId","viewCount","likeCount","dislikeCount",
                        "commentCount","favoriteCount"])

    # 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"]))
            title = search_result["snippet"]["title"]
            title = unidecode.unidecode(title)  # Dongho 08/10/16
            videoId = search_result["id"]["videoId"]
            video_response = youtube.videos().list(id=videoId,part="statistics").execute()
            for video_result in video_response.get("items",[]):
                viewCount = video_result["statistics"]["viewCount"]
                if 'likeCount' not in video_result["statistics"]:
                    likeCount = 0
                else:
                    likeCount = video_result["statistics"]["likeCount"]
                if 'dislikeCount' not in video_result["statistics"]:
                    dislikeCount = 0
                else:
                    dislikeCount = video_result["statistics"]["dislikeCount"]
                if 'commentCount' not in video_result["statistics"]:
                    commentCount = 0
                else:
                    commentCount = video_result["statistics"]["commentCount"]
                if 'favoriteCount' not in video_result["statistics"]:
                    favoriteCount = 0
                else:
                    favoriteCount = video_result["statistics"]["favoriteCount"]

            csvWriter.writerow([title,videoId,viewCount,likeCount,dislikeCount,
                                commentCount,favoriteCount])

    csvFile.close()