python is not responding on ver.0.7.2

[小野圭二]

Hi,

This might be an old and popular issue, but i could not find the solution
on Jira, mail archive and so on.
The python demo does not work.

[Env]:  CentOS 6.2  Python 2.6.6
         Zeppelin   0.7.2 netinst
                 beneath 'interpreter': jdbc,lib,md,python,shell,spark
[notebook]: from demo
%python
import matplotlib.pyplot as plt
plt.plot([1,2,3])

Traceback (most recent call last):
File "/tmp/zeppelin_python-2865335277309763273.py", line 20, in <module>
from py4j.java_gateway import java_import, JavaGateway, GatewayClient
ImportError: No module named py4j.java_gateway
Traceback (most recent call last):
File "/tmp/zeppelin_python-2865335277309763273.py", line 20, in <module>
from py4j.java_gateway import java_import, JavaGateway, GatewayClient
ImportError: No module named py4j.java_gateway

python is not responding


Any advice would be appreciated.

-Keiji