MAINT: nicer printing of exceptions (with trace)

src/caosadvancedtools/crawler.py

@@ -36,6 +36,8 @@ match. This occurs in basically three steps:
 """
 
 
+import traceback
+
 import caosdb as db
 from caosdb.exceptions import TransactionError
 
@@ -92,6 +94,7 @@ class Crawler(object):
                         cfood.update_identifiables()
                         cfood.push_identifiables_to_CaosDB()
                     except Exception as e:
+                        traceback.print_exc()
                         print(e)
 
     @staticmethod