Add Lift Study example (#814)

Summary:
This example shows how to retrieve a Conversion Lift Study (CLS) and its results using the Facebook Business SDK.

Pull Request resolved: #814

Reviewed By: satwikareddy3, JussanN

Differential Revision: D109317515

Pulled By: stcheng

fbshipit-source-id: 41c6107cfde883361660d2c25150f93e2bf8ecb5

Author: Jussan Da Silva Bahia Nascimento

examples/getliftstudy.py

@@ -0,0 +1,73 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+
+# This source code is licensed under the license found in the
+# LICENSE file in the root directory of this source tree.
+
+# ============================================================================
+# Get Lift Study Results Example
+# ============================================================================
+#
+# This example shows how to retrieve a Conversion Lift Study (CLS) and its
+# results using the Facebook Business SDK.
+#
+# Prerequisites:
+#   1. Create a Meta App and retrieve your App ID and App Secret.
+#      - Go to https://developers.facebook.com/apps/ and select your app.
+#      - App ID is at the top of the dashboard.
+#      - App Secret is under Settings > Basic (click "Show" to reveal).
+#
+#   2. Generate a System User access token with permissions:
+#      ads_management, ads_read, business_management.
+#      - Go to Business Manager > Business Settings > Users > System Users.
+#      - Assign your Meta App (Add Assets > Applications).
+#      - Click "Generate Token" and select the permissions above.
+#
+#   3. Install dependencies:
+#      pip install facebook-business pandas
+# ============================================================================
+
+import json
+import pandas as pd
+from facebook_business.api import FacebookAdsApi
+from facebook_business.adobjects.adstudy import AdStudy
+
+# --- Configuration -----------------------------------------------------------
+APP_ID = '<YOUR_APP_ID>'
+APP_SECRET = '<YOUR_APP_SECRET>'
+ACCESS_TOKEN = '<YOUR_ACCESS_TOKEN>'
+STUDY_ID = '<YOUR_STUDY_ID>'
+
+# --- Initialize the SDK ------------------------------------------------------
+FacebookAdsApi.init(APP_ID, APP_SECRET, ACCESS_TOKEN)
+
+# --- Retrieve Study dates ----------------------------------------------------
+study = AdStudy(STUDY_ID)
+study_data = study.api_get(fields=[
+    AdStudy.Field.name,
+    AdStudy.Field.start_time,
+    AdStudy.Field.end_time,
+])
+print("Study:", study_data.get('name'))
+print("Start:", study_data.get('start_time'))
+print("End:  ", study_data.get('end_time'))
+
+# --- Retrieve Study cells (treatment / control) ------------------------------
+cells = list(study.get_cells())
+print("\nCells:", cells)
+
+# --- Retrieve objectives and parse results ------------------------------------
+objectives = study.get_objectives(fields=['id', 'results'])
+
+all_results = []
+for objective in objectives:
+    for result_string in objective.get('results', []):
+        data = json.loads(result_string)
+        data['study_start_time'] = study_data.get('start_time')
+        data['study_end_time'] = study_data.get('end_time')
+        data['objective_id'] = objective.get('id')
+        all_results.append(data)
+
+df = pd.DataFrame(all_results)
+print("\nResults:")
+print(df.head())