1 files changed, 1 insertions, 0 deletions

diff --git a/petsc.py b/petsc.py
index 7d59bf8..d68c9f1 100644
--- a/petsc.py
+++ b/petsc.py
@@ -1,6 +1,7 @@
 from scipy.sparse import coo_matrix
 import struct
 import numpy as np
+import sys
 
 def load(fname):
     MATRIX_MAGIC = 1211216