Cache FAAPI instance in scraper example

FAAPI/FaveScraper.py

@@ -3,6 +3,7 @@
 import multiprocessing
 
 import requests
+import shelve
 
 from FAAPI import FAAPI
 
@@ -20,11 +21,20 @@ def download(url: str):
 
 if __name__ == '__main__':
     # Get an API instance
-    api = FAAPI()
+    shelf = shelve.open('api.shelf')
+    try:
+        api = shelf['api'] if 'api' in shelf.keys() else FAAPI()
+    except:
+        api = FAAPI()
+        shelf['api'] = api
 
     # Log in
     api.login()
 
+    # Save the API
+    shelf['api'] = api
+    shelf.close()
+
     # Get the user we've authenticated as
     user = api.get_user(api.username)
     if not user: