Using if statements rather than exception handling

bib_add_keyword.py

@@ -20,24 +20,22 @@
 def add_keyword(entry, keyword):
     """Add keyword to bibtex entry"""
 
-    try:
-        entry_keyword = entry["keyword"]
-        # bibtex parser uses keyword rather than keywords, we correct this here
-        if entry["keyword"]:
-            entry["keywords"] = entry["keyword"]
-            entry.pop("keyword")
-    except KeyError as err:
-        logging.info("No %s found", err)
-    try:
+    if "keyword" in entry:
+        entry["keywords"] = entry["keyword"]
+        entry.pop("keyword")
+    else:
+        logging.info("No keyword found.")
+        pass
+
+    if "keywords" in entry:
         entry_keywords = entry["keywords"]
         all_keywords = [x.strip() for x in entry_keywords.split(",")]
-        # print(all_keywords)
         if keyword in all_keywords:
             logging.info("Keyword %s already in.", keyword)
         else:
             logging.info("Adding keyword '%s'.", keyword)
             entry["keywords"] = entry_keywords + "," + keyword
-    except KeyError as err:
+    else:
         logging.info("Found no keywords, adding '%s'.", keyword)
         entry["keywords"] = keyword
 
@@ -82,7 +80,6 @@ def main():
     logging.debug("Added keywords to entries and wrote %s.", bibfile_path)
 # def main ends here
 
-
 if __name__ == '__main__':
     main()
 # finis