Update giphy_trending.py

Author: pedropregueiro

consuming-apis-python/giphy_trending.py

@@ -1,10 +1,17 @@
 import requests
 
-# Replace the following with the API key generated.
-api_key = "API_KEY"
+# REPLACE the following with the API key you generated.
+API_KEY = "REPLACE_DEMO_API_KEY"
+
 endpoint = "https://api.giphy.com/v1/gifs/trending"
-params = {"api_key": api_key, "limit": 3, "rating": "g"}
 
+# In the query parameters you can define:
+# 1. The number of GIFs to return using the `limit` parameter.
+# 2. The accepted rating of the GIFs returned using the `rating` parameter: https://developers.giphy.com/docs/optional-settings#rating
+params = {"api_key": API_KEY, "limit": 3, "rating": "g"}
+
+# The response will contain a list with all the GIFs that match your query.
+# For each of those, you want to get the `title`, `url` and the `trending_datetime` fields.
 response = requests.get(endpoint, params=params).json()
 for gif in response["data"]:
     title = gif["title"]