Documentation: Inclusion of a docstring for the check_amazon_availabi…

projects/Amazon Product Availbility Checker/amazon.py

@@ -2,9 +2,19 @@
 from bs4 import BeautifulSoup
 
 
-def check_amazon_availability(product_url):
+def check_amazon_availability(product_url:str, user_agent:str) -> None:
+    """
+        Checks if a provided product is still being available to buy on Amazon store just by providing its linked URL.
+
+        Attr:
+        - product_url(str): URL of the product desired to check for its availability in Amazon Store.
+        - user_agent(str): Personal Amazon user's User-Agent.
+
+        Return:
+        - None
+    """
     headers = {
-        "User-Agent": "Your User Agent Here"  # Replace with a valid user agent string
+        "User-Agent": user_agent,  # Replace with a valid user agent string
     }
 
     try:
@@ -30,5 +40,6 @@ def check_amazon_availability(product_url):
 
 
 if __name__ == "__main__":
+    user_agent = "YOUR_USER_AGENT_HERE"
     product_url = "YOUR_PRODUCT_URL_HERE"
-    check_amazon_availability(product_url)
+    check_amazon_availability(product_url, user_agent)