Remove tensorflow and CloudML SDK from setup.py (#144)

* Install TensorFlow 0.12.1.

* Remove TensorFlow and CloudML SDK from setup.py.

* Add comments why we ignore errors when importing mlalpha.

Author: qimingj

datalab/kernel/__init__.py

@@ -31,11 +31,21 @@
 import datalab.bigquery.commands
 import datalab.context.commands
 import datalab.data.commands
-import datalab.mlalpha.commands
 import datalab.stackdriver.commands
 import datalab.storage.commands
 import datalab.utils.commands
 
+# mlalpha modules require TensorFlow, CloudML SDK, and DataFlow (installed with CloudML SDK).
+# These are big dependencies and users who want to use Bigquery/Storage features may not
+# want to install them.
+# This __init__.py file is called when Jupyter/Datalab loads magics on startup. We don't want
+# Jupyter+pydatalab fail to start because of missing TensorFlow/DataFlow. So we ignore import
+# errors on mlalpha commands.
+try:
+  import datalab.mlalpha.commands
+except:
+  print('TensorFlow and CloudML SDK are required.')
+
 
 _orig_request = _httplib2.Http.request
 _orig_init = _requests.Session.__init__

setup.py

@@ -109,24 +109,3 @@
       ]
   }
 )
-
-# for python2 only, install tensorflow and cloudml
-if sys.version_info[0] == 2:
-  tensorflow_path = None
-  if platform.system() == 'Darwin':
-    tensorflow_path = 'https://storage.googleapis.com/tensorflow/mac/cpu/tensorflow-0.11.0-py2-none-any.whl'
-  elif platform.system() == 'Linux':
-    if platform.linux_distribution()[0] == 'Ubuntu':
-      tensorflow_path = 'https://storage.googleapis.com/tensorflow/linux/cpu/tensorflow-0.11.0-cp27-none-linux_x86_64.whl'
-    elif platform.linux_distribution()[0] == 'Debian':
-      tensorflow_path = 'https://storage.googleapis.com/tensorflow/linux/cpu/debian/jessie/tensorflow-0.11.0-cp27-none-linux_x86_64.whl'
-
-  # install tensorflow
-  if not tensorflow_path:
-    print("""Warning: could not find tensorflow build for your OS.
-    Please go to https://www.tensorflow.org/get_started/os_setup to see install options""")
-  else:
-    pip.main(['install', tensorflow_path])
-
-  # install cloud ml sdk
-  pip.main(['install', 'https://storage.googleapis.com/cloud-ml/sdk/cloudml.latest.tar.gz'])