Fixes #30

zxcalc · Apr 8, 2020 · 119b23b · 119b23b
1 parent 52de1b1
commit 119b23b
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/pyzx/scripts/cnot_mapper.py b/pyzx/scripts/cnot_mapper.py
@@ -28,7 +28,7 @@
 try:
     import numpy as np
 except:
-    np = pass
+    np = None
 
 if __name__ == '__main__':
     print("Please call this as python -m pyzx mapper ...")