ImportError: No module named mjcpy

[chello-g]

sophie@sophie-Lenovo-G400:~/Downloads/ghlgps/build$ cmake ../src/3rdparty
CMake Warning (dev) in CMakeLists.txt:
No project() command is present. The top-level CMakeLists.txt file must
contain a literal, direct call to the project() command. Add a line of
code such as

project(ProjectName)

near the top of the file, but after cmake_minimum_required().

CMake is pretending there is a "project(Project)" command on the first
line.
This warning is for project developers. Use -Wno-dev to suppress it.

-- found boost:
INCLUDE: /usr/local/include
LIB: /usr/lib/x86_64-linux-gnu/libboost_python.so
osg includes: /usr/include
-- Configuring done
-- Generating done
-- Build files have been written to: /home/sophie/Downloads/ghlgps/build
sophie@sophie-Lenovo-G400:/Downloads/ghlgps/build$ make -j
[ 70%] Built target boost_numpy
[100%] Built target mjcpy
sophie@sophie-Lenovo-G400:/Downloads/ghlgps/build$ python
Python 2.7.12 (default, Nov 12 2018, 14:36:49)
[GCC 5.4.0 20160609] on linux2
Type "help", "copyright", "credits" or "license" for more information.

import mjcpy
Traceback (most recent call last):
File "", line 1, in
ImportError: No module named mjcpy

########################################################
I executed MuJoCo Setup and it succeeded, but it showed ImportError: No module named mjcpy...
I look forward to your reply to my question.