title: ModuleNotFoundError: No module named 'sklearn.grid_search'
body: <p>I am doing an image detection problem but, I got some errors while I import <code>RandomizedSearchCV</code>.</p>
  
  <p>I have installed: </p>
  
  <pre><code>pip3 install scikit-learn
  pip3 install scikit-image
  </code></pre>
  
  <p>I tried this code first: </p>
  
  <pre><code>from sklearn.neighbors import KNeighborsClassifier
  from sklearn.model_selection import GridSearchCV
  </code></pre>
  
  <p>its worked, After that, I import <code>RandomizedSearchCV</code> like this, and its showing error.</p>
  
  <pre><code>from sklearn.grid_search import RandomizedSearchCV
  from sklearn.grid_search import GridSearchCV
  from sklaern.cross_validation import train_test_split
  
  
  ---------------------------------------------------------------------------
  ModuleNotFoundError                       Traceback (most recent call last)
  &lt;ipython-input-11-9f5ecfd22091&gt; in &lt;module&gt;
  ----&gt; 1 from sklearn.grid_search import RandomizedSearchCV
        2 from sklearn.grid_search import GridSearchCV
        3 from sklaern.cross_validation import train_test_split
  
  ModuleNotFoundError: No module named 'sklearn.grid_search'
  
   &gt;&gt;&gt; import sklearn
  &gt;&gt;&gt; sklearn.__version__
  '0.20.3'
  </code></pre>