raise a ValueError if database name not recognized (mispelled or not …

…implemented yet)
OpenBookPublishers · Aug 17, 2022 · a351b6c · a351b6c
1 parent f72f01b
commit a351b6c
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/src/metadata.py b/src/metadata.py
@@ -52,8 +52,11 @@ class Metadata:
     def __init__(self, database="thoth", doi=None):
         if database == "thoth":
             self.db = Thoth(doi)
-        if database == "crossref":
+        elif database == "crossref":
             self.db = Crossref(doi)
+        else:
+            raise ValueError(f"Database '{database}' misspelled or not "
+                             "implemented yet.")
 
         self.book = self.fetch_book_data()
         self.chapters = self.fetch_chapter_data()