从上一篇文章中，我们已经看到 API 可用于插入、更新或删除播放列表。现在问题来了，一旦我们创建了播放列表，我们是否必须去 Youtube 并手动将视频添加到新创建的播放列表中。不！！！您所要做的就是使用 OAuth 凭据，并且只需知道播放列表 ID 即可将视频添加到播放列表中。
我们可以找到我们想要使用的特定播放列表的播放列表 ID。嗯，答案是 – 有两种方法可以找到 Id：
- 第一种方法是使用我们在上一篇文章中讨论过的代码来列出您的所有播放列表。这将生成您拥有的播放列表列表，同时提及 ID 和名称。
- 第二种方法是登录您的 Youtube 帐户。转到所需的播放列表，单击它并单击共享选项。这将向您显示播放列表 ID。
由于这一切都需要用户授权，所以我们将首先创建 OAuth 凭证。
在添加视频之前，我们将了解如何使用代码列出播放列表的内容。
按照以下步骤生成客户端 ID 和密钥。
- 转到 Google Google Developers Console，然后单击页面右上角的登录。使用有效 Google 帐户的凭据登录。如果您没有 google 帐户，请先设置一个帐户，然后使用详细信息在 Google Developers 主页上登录。
- 现在导航到开发人员仪表板并创建一个新项目。
- 单击启用 API 选项。
- 在搜索字段中，搜索Youtube Data API并选择下拉列表中的 Youtube Data API 选项。
- 您将被重定向到显示有关 Youtube Data API 信息的屏幕，以及两个选项： ENABLE 和 TRY API 。
- 单击启用选项以开始使用 API。
- 在 APIs & Services 下的侧边栏中，选择Credentials 。
- 在页面顶部，选择OAuth 同意屏幕选项卡。选择一个电子邮件地址，如果尚未设置，请输入产品名称，然后单击保存按钮。
- 在凭据选项卡中，选择创建凭据下拉列表，然后选择OAuth 客户端 ID 。 OAuth 通常用于需要授权的情况，例如检索用户喜欢的视频。
- 选择其他应用程序类型，输入名称“YouTube Data API Myvideos”，然后单击“创建”按钮并单击“确定”。
- 单击客户端 ID 右侧的下载按钮以下载 JSON 文件。
- 将文件保存并重命名为 client_secret.json 并将其移动到工作目录。
使用 pip命令安装其他库：
pip install --upgrade google-auth google-auth-oauthlib google-auth-httplib2列出播放列表项目的代码：
import os
import google.oauth2.credentials
import google_auth_oauthlib.flow
from googleapiclient.discovery import build
from googleapiclient.errors import HttpError
from google_auth_oauthlib.flow import InstalledAppFlow
# The CLIENT_SECRETS_FILE variable specifies
# the name of a file that contains
# client_id and client_secret.
CLIENT_SECRETS_FILE = "client_secret.json"
# This scope allows for full read/write
# access to the authenticated user's account
# and requires requests to use an SSL connection.
SCOPES = ['https://www.googleapis.com/auth/youtube.force-ssl']
API_SERVICE_NAME = 'youtube'
API_VERSION = 'v3'
def get_authenticated_service():
flow = InstalledAppFlow.from_client_secrets_file(
CLIENT_SECRETS_FILE, SCOPES)
credentials = flow.run_console()
return build(API_SERVICE_NAME, API_VERSION, credentials = credentials)
def print_response(response):
print(response)
# Build a resource based on a list of
# properties given as key-value pairs.
# Leave properties with empty values out
# of the inserted resource.
def build_resource(properties):
resource = {}
for p in properties:
# Given a key like "snippet.title", split
# into "snippet" and "title", where
# "snippet" will be an object and "title"
# will be a property in that object.
prop_array = p.split('.')
ref = resource
for pa in range(0, len(prop_array)):
is_array = False
key = prop_array[pa]
# For properties that have array values,
# convert a name like "snippet.tags[]" to
# snippet.tags, and set a flag to handle
# the value as an array.
if key[-2:] == '[]':
key = key[0:len(key)-2:]
is_array = True
if pa == (len(prop_array) - 1):
# Leave properties without values
# out of inserted resource.
if properties[p]:
if is_array:
ref[key] = properties[p].split(',')
else:
ref[key] = properties[p]
elif key not in ref:
# For example, the property is "snippet.title",
# but the resource does not yet have a "snippet"
# object. Create the snippet object here. Setting
# "ref = ref[key]" means that in the next time
# through the "for pa in range ..." loop, we will
# be setting a property in the resource's "snippet" object.
ref[key] = {}
ref = ref[key]
else:
# For example, the property is "snippet.description",
# and the resource already has a "snippet" object.
ref = ref[key]
return resource
# Remove keyword arguments that are not set
def remove_empty_kwargs(**kwargs):
good_kwargs = {}
if kwargs is not None:
for key, value in kwargs.items():
if value:
good_kwargs[key] = value
return good_kwargs
def playlist_items_list(client, **kwargs):
kwargs = remove_empty_kwargs(**kwargs)
response = client.playlistItems().list(**kwargs).execute()
return print_response(response)
if __name__ == '__main__':
# When running locally, disable OAuthlib's
# HTTPs verification. When running in production
# *do not* leave this option enabled.
os.environ['OAUTHLIB_INSECURE_TRANSPORT'] = '1'
client = get_authenticated_service()
playlist_items_list(client,
part='snippet,contentDetails',
maxResults=3,
playlistId='PLqAJNJC4tCYtyVYlRABk5NTDDi2sfqbqV')
输出：
当您执行代码时，系统会要求您提供授权代码。要获取代码，您需要按照以下行上方的命令提示符屏幕中提到的链接进行操作：输入授权代码。 
现在点击链接并复制粘贴您将通过授予权限获得的授权代码。 
为方便起见，我们将 maxResults 参数设置为 3。否则，totalResults 计数为 32。这意味着查询的播放列表包含 32 个视频。 
插入视频的代码：此示例显示如何将视频插入播放列表。 id、snippet.resourceId.kind 和 snippet.resourceId.videoId 是必需的属性。
在将视频添加到所需的播放列表之前，我们首先将视频上传到 youtube 频道，然后我们将使用视频 ID 将视频分配到所需的播放列表。请按照 Youtube 数据 API 视频中提到的步骤操作 |用于上传视频的 Set-3 文章。作为参考，我使用了相同的代码并将相同的视频上传到了 Youtube 频道。
import os
import google.oauth2.credentials
import google_auth_oauthlib.flow
from googleapiclient.discovery import build
from googleapiclient.errors import HttpError
from google_auth_oauthlib.flow import InstalledAppFlow
# The CLIENT_SECRETS_FILE variable specifies
# the name of a file that contains
# client_id and client_secret.
CLIENT_SECRETS_FILE = "client_secret.json"
# This scope allows for full read/write access
# to the authenticated user's account and requires
# requests to use an SSL connection.
SCOPES = ['https://www.googleapis.com/auth/youtube.force-ssl']
API_SERVICE_NAME = 'youtube'
API_VERSION = 'v3'
def get_authenticated_service():
flow = InstalledAppFlow.from_client_secrets_file(
CLIENT_SECRETS_FILE, SCOPES)
credentials = flow.run_console()
return build(API_SERVICE_NAME, API_VERSION, credentials = credentials)
def print_response(response):
print(response)
# Build a resource based on a list of properties
# given as key-value pairs. Leave properties with
# empty values out of the inserted resource.
def build_resource(properties):
resource = {}
for p in properties:
# Given a key like "snippet.title", split into
# "snippet" and "title", where "snippet" will be
# an object and "title" will be a property in that object.
prop_array = p.split('.')
ref = resource
for pa in range(0, len(prop_array)):
is_array = False
key = prop_array[pa]
# For properties that have array values,
# convert a name like "snippet.tags[]" to
# snippet.tags, and set a flag to handle
# the value as an array.
if key[-2:] == '[]':
key = key[0:len(key)-2:]
is_array = True
if pa == (len(prop_array) - 1):
# Leave properties without values
# out of inserted resource.
if properties[p]:
if is_array:
ref[key] = properties[p].split(',')
else:
ref[key] = properties[p]
elif key not in ref:
# For example, the property is "snippet.title",
# but the resource does not yet have a "snippet"
# object. Create the snippet object here.
# Setting "ref = ref[key]" means that in the next
# time through the "for pa in range ..." loop, we
# will be setting a property in the
# resource's "snippet" object.
ref[key] = {}
ref = ref[key]
else:
# For example, the property is "snippet.description",
# and the resource already has a "snippet" object.
ref = ref[key]
return resource
# Remove keyword arguments that are not set
def remove_empty_kwargs(**kwargs):
good_kwargs = {}
if kwargs is not None:
for key, value in kwargs.items():
if value:
good_kwargs[key] = value
return good_kwargs
def playlist_items_insert(client, properties, **kwargs):
resource = build_resource(properties)
kwargs = remove_empty_kwargs(**kwargs)
response = client.playlistItems().insert(
body=resource,**kwargs).execute()
return print_response(response)
if __name__ == '__main__':
# When running locally, disable OAuthlib's HTTPs
# verification. When running in production *do not*
# leave this option enabled.
os.environ['OAUTHLIB_INSECURE_TRANSPORT'] = '1'
client = get_authenticated_service()
playlist_items_insert(client,
{'snippet.playlistId': 'PLqAJNJC4tCYtyVYlRABk5NTDDi2sfqbqV',
'snippet.resourceId.kind': 'youtube#video',
'snippet.resourceId.videoId': 'MhPgMbYkuHc',
'snippet.position': ''},
part='snippet',
onBehalfOfContentOwner='')
输出：
当您执行代码时，系统会要求您提供授权代码。要获取代码，您需要按照以下行上方的命令提示符屏幕中提到的链接进行操作：输入授权代码。 
现在点击链接并复制粘贴您将通过授予权限获得的授权代码。 
如您所见，视频已添加到播放列表中。如果您将运行上面讨论的代码以列出提到的播放列表中的所有项目，您将看到 totalResults 参数现在的值为 33。
参考：
- https://developers.google.com/youtube/v3/docs/playlistItems/insert
- https://developers.google.com/youtube/v3/docs/playlistItems/list
- https://developers.google.com/youtube/v3/docs/playlistItems