Youtube Data API Playlist | Set-3

From the previous article, we have seen that API can be used to insert, update or delete a playlist. Now the question comes that once we have created a playlist, do we have to go to Youtube and manually add the video to the newly created playlist. NO!!! all you have to do is use the OAuth Credential and just know the playlist Id to add the video to the Playlist.

We can find the playlist Id for a specific playlist that we want to work with. Well, the answer is- There are two ways to find the Id:

  1. First way is to use the code that we have discussed in previous article to list all of your playlist. This will generate the list of playlist that you own, also mentioning the Id along with the name.
  2. Second way is to login into your Youtube Account. Go to desired playlist, click on it and click on the share option. This will show you the playlist Id.

Since all this requires user authorization, so we will be first creating OAuth Credential.
Before adding video, we will see how to list the contents of a playlist using the code.
Follow the steps below to generate a Client Id and a Secret Key.

  1. Go to Google Google Developers Console and Click on Sign In in the upper rightmost corner of the page. Sign In using the credentials of the valid Google Account. If you don’t have a google account, setup a account first and then use the details to Sign In on the Google Developers Homepage.
  2. Now navigate to the Developer Dashboard and create a new Project.
  3. Click on Enable API option.
  4. In the search field, search for Youtube Data API and select the Youtube Data API option that comes in the drop down list.
  5. You will be redirected to a screen that says information about the Youtube Data API, along with two options : ENABLE and TRY API.
  6. Click on ENABLE option to get started with the API.
  7. In the sidebar under APIs & Services, select Credentials.
  8. At the top of the page, select the OAuth consent screen tab. Select an Email address, enter a Product name if not already set, and click the Save button.
  9. In the Credentials tab, select the Create credentials drop-down list, and choose OAuth Client Id. OAuth is generally used where authorization is required like in the case of retrieving liked videos of a user.
  10. Select the application type Other, enter the name “YouTube Data API Myvideos”, and click the Create button and click OK.
  11. Click on Download button to the right of the client Id to download the JSON file.
  12. Save and rename the file as client_secret.json and move it to the working directory.

Install additional libraries using the pip command:

pip install --upgrade google-auth google-auth-oauthlib google-auth-httplib2

Code to list the Playlist Items:

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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.
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')

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Output:
When you will execute the code you will be asked for the authorization code. For getting the code you need to follow the link mentioned in the command prompt screen above the line: Enter the Authorization code.

Now follow the link and copy paste the authorization code that you will get by granting the permission.

For the convinience we have set maxResults parameter to 3. Otherwise, totalResults count is 32. This means that the enquired playlist consist of 32 videos.

Code to Insert a Video: This example show how to insert a video to a playlist. The id, snippet.resourceId.kind and snippet.resourceId.videoId are the required attributes.
Before adding a video to the required playlist, we will first upload the video to the youtube channel and then we will assign the video to the desired playlist using the Video Id. Please follow the steps mentioned in the Youtube Data API Videos | Set-3 article for uploading the video. For reference, I have used the same code and uploaded the same video to the Youtube Channel.

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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.
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='')

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Output:
When you will execute the code you will be asked for the authorization code. For getting the code you need to follow the link mentioned in the command prompt screen above the line: Enter the Authorization code.

Now follow the link and copy paste the authorization code that you will get by granting the permission.

As you can see the video is added to the playlist. If you will run the code discussed above to list all items in a mentioned playlist, You will see that the totalResults parameter now has value 33.

References:

  1. https://developers.google.com/youtube/v3/docs/playlistItems/insert
  2. https://developers.google.com/youtube/v3/docs/playlistItems/list
  3. https://developers.google.com/youtube/v3/docs/playlistItems


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