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-rw-r--r--gr-blocks/python/blocks/qa_null_sink_source.py1
1 files changed, 1 insertions, 0 deletions
diff --git a/gr-blocks/python/blocks/qa_null_sink_source.py b/gr-blocks/python/blocks/qa_null_sink_source.py
index 03d6ab14c1..8ddd8db6fc 100644
--- a/gr-blocks/python/blocks/qa_null_sink_source.py
+++ b/gr-blocks/python/blocks/qa_null_sink_source.py
@@ -20,6 +20,7 @@
# Boston, MA 02110-1301, USA.
#
+
from gnuradio import gr, gr_unittest, blocks
import math