raise on error

1 files changed, 11 insertions, 2 deletions

diff --git a/pyisda/credit_index.pyx b/pyisda/credit_index.pyx
index 65dc439..ea1a809 100644
--- a/pyisda/credit_index.pyx
+++ b/pyisda/credit_index.pyx
@@ -111,8 +111,17 @@ cdef class CurveList:
 
     def __getitem__(self, tuple name not None):
         cdef:
-            char* buf = <char*>malloc(len(name[0]) + 3)
-            char* tmp
+            DocClause doc_clause
+            Seniority sen
+            str ticker
+            pair[CurveName, size_t] p
+
+        try:
+            ticker, sen, doc_clause = name
+        except ValueError as e:
+            raise KeyError(str(e)) from None
+        cdef:
+            char* buf = <char*>malloc(len(ticker) + 3)
 
         buf[0] = <char>sen
         buf[1] = <char>doc_clause