Fix linting errors

Author: Stefan Oderbolz

examples/library_of_congress.py

@@ -1,7 +1,9 @@
 import sruthi
+import sys
 
 LOC_BASE = 'http://lx2.loc.gov:210/LCDB?'
 
+
 def loc_search(isbn, sru_base):
     loc_lcc = None
     try:
@@ -14,10 +16,12 @@ def loc_search(isbn, sru_base):
             if len(field.get('subfield', [])) > 0:
                 loc_lcc = (field['subfield'][0]['text'])
                 break
-    except:
+    except Exception as e:
+        print("Error: %s" % e, file=sys.stderr)
         return None
     return loc_lcc
 
+
 isbn = '0062509470'
 result = loc_search(isbn, LOC_BASE)
 print(f"Tag 050 of ISBN '{isbn}': {result}")