在Google Play和Firebase中，都可以通过记录新用户数量来分析和比较不同来源的用户行为。在Google Play中，可以使用Google Play Developer API获取新用户数据，并将其与Firebase的first_open /新用户数据进行比较。以下是一个示例代码，展示如何使用Google Play Developer API和Firebase Analytics API来实现这一目标：

from google.oauth2 import service_account
from googleapiclient.discovery import build
from firebase_admin import credentials
from firebase_admin import analytics

# Path to the service account key JSON file
service_account_file = '/path/to/service-account.json'

# Firebase app initialization
cred = credentials.Certificate(service_account_file)
analytics.initialize_app(cred)

# Google Play Developer API initialization
credentials = service_account.Credentials.from_service_account_file(service_account_file)
android_publisher = build('androidpublisher', 'v3', credentials=credentials)


# Define start and end dates for the analysis
start_date = '2022-01-01'
end_date = '2022-01-31'

# Get new user counts from Google Play Developer API
new_users_response = android_publisher.reviews().list(
    packageName='com.example.app',
    startIndex=0,
    maxResults=1,
    translationLanguageCode='en',
    sortOrder='LAST_MODIFIED',
    prettyPrint=True
).execute()

new_user_count = new_users_response['pageInfo']['totalResults']

# Get new user counts from Firebase Analytics API
new_user_event = analytics.Event('first_open')
new_user_count = analytics.log_event_count(new_user_event, start_date=start_date, end_date=end_date)

# Compare new user counts from Google Play and Firebase Analytics
if new_user_count > 0:
    print('There were a total of {} new users in the specified date range.'.format(new_user_count))
else:
    print('No new users were recorded in the specified date range.')

在上述代码中，我们首先通过Google Play Developer API获取了新用户数量，并将其存储在变量new_user_count中。然后，我们使用Firebase Analytics API获取了相同时间范围内的'first_open”事件数量，并将其存储在相同的变量中。最后，我们比较了两个变量中的数量，并输出结果。这样，我们就可以比较Google Play和Firebase中不同来源的用户行为了。