ImportError: zymkey

Once binding done,Confirmed with 3 sec led blinking.
I tried to run this command,
python /usr/local/share/zymkey/examples/zk_app_utils_test.py

But i was getting this error,…
Traceback (most recent call last):
File “/usr/local/share/zymkey/examples/zk_app_utils_test.py”, line 1, in
import zymkey
ImportError: No module named zymkey