title: how to solve the no 'estimator' in tensorflow?
body: <p>I am trying to implement a code from tensorflow: </p>
  
  <blockquote>
    <p><a href="https://colab.research.google.com/github/tensorflow/hub/blob/master/examples/colab/semantic_similarity_with_tf_hub_universal_encoder.ipynb" rel="nofollow noreferrer">https://colab.research.google.com/github/tensorflow/hub/blob/master/examples/colab/semantic_similarity_with_tf_hub_universal_encoder.ipynb</a></p>
  </blockquote>
  
  <p>However, I had the error of tensorflow lib as follows, I have tried uninstall and reinstall the tensorflow but no working, is anyone facing this error before?</p>
  
  <pre><code>  import tensorflow as tf
    File "/data/d14127800/py3_170/lib/python3.5/site-packages/tensorflow/__init__.py", line 22, in &lt;module&gt;
      from tensorflow.python import pywrap_tensorflow  # pylint: disable=unused-import
    File "/data/d14127800/py3_170/lib/python3.5/site-packages/tensorflow/python/__init__.py", line 52, in &lt;module&gt;
      from tensorflow.core.framework.graph_pb2 import *
    File "/data/d14127800/py3_170/lib/python3.5/site-packages/tensorflow/core/framework/graph_pb2.py", line 6, in &lt;module&gt;
      from google.protobuf import descriptor as _descriptor
    File "/data/d14127800/py3_170/lib/python3.5/site-packages/google/protobuf/__init__.py", line 37, in &lt;module&gt;
      __import__('pkg_resources').declare_namespace(__name__)
    File "/data/d14127800/py3_170/lib/python3.5/site-packages/pkg_resources/__init__.py", line 3112, in &lt;module&gt;
      @_call_aside
    File "/data/d14127800/py3_170/lib/python3.5/site-packages/pkg_resources/__init__.py", line 3096, in _call_aside
      f(*args, **kwargs)
    File "/data/d14127800/py3_170/lib/python3.5/site-packages/pkg_resources/__init__.py", line 3140, in _initialize_master_working_set
      for dist in working_set
    File "/data/d14127800/py3_170/lib/python3.5/site-packages/pkg_resources/__init__.py", line 3140, in &lt;genexpr&gt;
      for dist in working_set
    File "/data/d14127800/py3_170/lib/python3.5/site-packages/pkg_resources/__init__.py", line 2647, in activate
      declare_namespace(pkg)
    File "/data/d14127800/py3_170/lib/python3.5/site-packages/pkg_resources/__init__.py", line 2184, in declare_namespace
      _handle_ns(packageName, path_item)
    File "/data/d14127800/py3_170/lib/python3.5/site-packages/pkg_resources/__init__.py", line 2117, in _handle_ns
      loader.load_module(packageName)
    File "/data/d14127800/dataset10/google.py", line 4, in &lt;module&gt;
      import tensorflow_hub as hub
    File "/data/d14127800/py3_170/lib/python3.5/site-packages/tensorflow_hub/__init__.py", line 23, in &lt;module&gt;
      from tensorflow_hub.estimator import LatestModuleExporter
    File "/data/d14127800/py3_170/lib/python3.5/site-packages/tensorflow_hub/estimator.py", line 61, in &lt;module&gt;
      class LatestModuleExporter(tf.estimator.Exporter):
  AttributeError: module 'tensorflow' has no attribute 'estimator'
  </code></pre>