Youtube Data API Subscription | Set-1

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 subscriptions_list_by_channel_id(client, **kwargs):
  kwargs = remove_empty_kwargs(**kwargs)

  response = client.subscriptions().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()
  
  subscriptions_list_by_channel_id(client,
    part ='snippet, contentDetails',
    channelId ='UCqoMU8lNdUq63ZmTJFd620w',
    maxResults = 3)