Fix duplicate aliases being written

inflatinator/__main__.py

@@ -1,10 +1,12 @@
+import logging
+import os
 import revbank
 import sys
-import logging
 
 
 def main(product_file):
-    logging.basicConfig(level=logging.INFO)
+    log_level = os.environ.get('LOG_LEVEL', 'INFO').upper()
+    logging.basicConfig(level=log_level)
     logging.getLogger("requests").setLevel(logging.WARNING)
     logging.getLogger("urllib3").setLevel(logging.WARNING)
 

inflatinator/revbank.py

@@ -86,16 +86,16 @@ def update_product_pricings(src):
         try:
             prod_info = find_product_details(product)
         except NoAutoUpdate:
-            logging.debug('no auto update: %s', product)
+            logging.debug('no auto update: "%s"', product.description)
             lines_out.append(line)
             continue
         except Exception as err:
-            logging.error('did not update %s: %s', product, err)
+            logging.error('did not update "%s": %s', product.description, err)
             lines_out.append(line)
             continue
 
-        human_aliases = sorted(set(product.aliases) - set([prod_info.gtin]) - set(prod_info.aliases))
-        product.aliases = [prod_info.gtin, *prod_info.aliases, *human_aliases]
+        aliases = sorted(set(product.aliases) - {prod_info.gtin})
+        product.aliases = [prod_info.gtin, *aliases]
 
         # Apply profit margin and divide by the number of units per sold packaging.
         unit_price = prod_info.price * profit_margin / prod_info.units