# googleapiclient/_auth.py: 91
# googleapiclient/channel.py: 63,64
# googleapiclient/discovery.py:     56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,76,77
# googleapiclient/errors.py: 26
# googleapiclient/http.py: 58,60,61,62,63,64,65,66,67
# googleapiclient/model.py: 32,33
# googleapiclient/sample_tools.py: 28,29
# googleapiclient/schema.py: 68
# wzfreebusy.py: 3
google_api_python_client == 1.7.4

# googleapiclient/_auth.py: 20,21
# googleapiclient/discovery_cache/__init__.py: 36
# googleapiclient/discovery_cache/appengine_memcache.py: 21
google_auth == 1.5.1

# googleapiclient/_auth.py: 27
google_auth_httplib2 == 0.0.3

# googleapiclient/_auth.py: 17
# googleapiclient/discovery.py: 52
# googleapiclient/http.py: 34
# wzfreebusy.py: 4
httplib2 == 0.11.3

# googleapiclient/_auth.py: 32,33
# googleapiclient/discovery_cache/file_cache.py: 37
# googleapiclient/sample_tools.py: 32,33,34
# wzfreebusy.py: 5
oauth2client == 4.1.3

No module named httplib2