サイボウズLive マイカレンダー　を　Google カレンダー　に

サイボウズ Live　グループの　『イベントカレンダー』　については　iCalendar 出力できる
　https://help.cybozulive.com/hlpb201206181140/
My カレンダーについては iCalendar 出力できません
iCalendar 出力したい - Cybozu Live API

How to run Cybozu Live data API example codes

Source : https://developer.cybozulive.com/doc/current/pub/samples.html
but the codes are Not working at all ...
current version of Python icalendar 3.11.2, however the example codes does NOT work with it.
Need to install icalendar 2.2 to run examples above

Environment

CentOS 7.3
Python 2.7.5

easy_install pip

# easy_install pip

pip install icalendar==2.2

# pip install icalendar==2.2
Collecting icalendar==2.2
  Using cached icalendar-2.2.tar.gz
Requirement already satisfied: setuptools in /usr/lib/python2.7/site-packages (from icalendar==2.2)
Installing collected packages: icalendar
  Running setup.py install for icalendar ... done
Successfully installed icalendar-2.2

httplib2 oauth2

# easy_install httplib2
Searching for httplib2
Reading https://pypi.python.org/simple/httplib2/
Best match: httplib2 0.9.2
Downloading https://pypi.python.org/packages/ff/a9/5751cdf17a70ea89f6dde23ceb1705bfb638fd8cee00f845308bf8d26397/httplib2-0.9.2.tar.gz#md5=bd1b1445b3b2dfa7276b09b1a07b7f0e
Processing httplib2-0.9.2.tar.gz
Writing /tmp/easy_install-uF92dS/httplib2-0.9.2/setup.cfg
Running httplib2-0.9.2/setup.py -q bdist_egg --dist-dir /tmp/easy_install-uF92dS/httplib2-0.9.2/egg-dist-tmp-KIqNK_
zip_safe flag not set; analyzing archive contents...
httplib2.__init__: module references __file__
Adding httplib2 0.9.2 to easy-install.pth file

Installed /usr/lib/python2.7/site-packages/httplib2-0.9.2-py2.7.egg
Processing dependencies for httplib2
Finished processing dependencies for httplib2

# easy_install oauth2
Searching for oauth2
Reading https://pypi.python.org/simple/oauth2/
Best match: oauth2 1.9.0.post1
Downloading https://pypi.python.org/packages/64/19/8b9066e94088e8d06d649e10319349bfca961e87768a525aba4a2627c986/oauth2-1.9.0.post1.tar.gz#md5=22d49051d1d19d9ec17df480a463d0bb
Processing oauth2-1.9.0.post1.tar.gz
Writing /tmp/easy_install-vg8Nq_/oauth2-1.9.0.post1/setup.cfg
Running oauth2-1.9.0.post1/setup.py -q bdist_egg --dist-dir /tmp/easy_install-vg8Nq_/oauth2-1.9.0.post1/egg-dist-tmp-vQHvU9
Adding oauth2 1.9.0.post1 to easy-install.pth file

Installed /usr/lib/python2.7/site-packages/oauth2-1.9.0.post1-py2.7.egg
Processing dependencies for oauth2
Finished processing dependencies for oauth2