fix AttributeError: 'module' object has no attribute '???'on windows python 2.7

tensorflow/api_template_v1.__init__.py

@@ -40,7 +40,8 @@ if '__all__' in vars():
   vars()['__all__'].append('contrib')
 
 from tensorflow.python.platform import flags  # pylint: disable=g-import-not-at-top
-app.flags = flags  # pylint: disable=undefined-variable
+from tensorflow.python.platform import app  # pylint: disable=g-import-not-at-top
+app.flags = flags
 
 # Make sure directory containing top level submodules is in
 # the __path__ so that "from tensorflow.foo import bar" works.

tensorflow/contrib/cmake/python_modules.txt

@@ -1,6 +1,9 @@
 # python_sanity_test.py will complain about invalid or missing entries
 # problematic entries can be commented for temporary whitelisting
 tensorflow
+tensorflow/compiler
+tensorflow/compiler/xla
+tensorflow/compiler/xla/service
 tensorflow/core
 tensorflow/core/example
 tensorflow/core/framework

tensorflow/contrib/cmake/tf_python.cmake

@@ -802,6 +802,7 @@ add_custom_command(
       # tensorflow/__init__.py depends on files generated in this step. So, remove it while
       # this step is running since the files aren't there yet.
       COMMAND ${CMAKE_COMMAND} -E remove -f ${CMAKE_CURRENT_BINARY_DIR}/tf_python/tensorflow/__init__.py
+      COMMAND ${CMAKE_COMMAND} -E touch ${CMAKE_CURRENT_BINARY_DIR}/tf_python/tensorflow/__init__.py
 
       # Run create_python_api.py to generate API init files.
       COMMAND ${CMAKE_COMMAND} -E env PYTHONPATH=${CMAKE_CURRENT_BINARY_DIR}/tf_python "${PY_RUNTIME_ENV}" ${PYTHON_EXECUTABLE}