title: split column containing list into dummies columns
body: <p>I would like to split the column <code>Technologies</code> into dummies columns containing only one technology, in other words to get one column Matlab, another one Python etc..</p>
  
  <p>I've started with <code>df['Technologies'].str.split("/").to_list()</code> but then I'm blocked.
  Below the dataframe that I was given:</p>
  
  <pre><code>    Job                 Technologies                                       City
  0   Data scientist      Matlab/Python/Pyspark/Scikit-learn/Tensorflow      Paris
  1   Data architecte     Python/Java/Scala/MongoDB                          Marseille
  2   Lead data scientist SPSS/SQL/Teradata/R/Python/Tensorflow/scikit-learn Nantes
  3   Data scientist      C/C++/Java/Python                                  Marseille
  4   Data scientist      Matlab/Python/C++/numpy/Tensorflow/scikit-learn    Bordeaux
  </code></pre>
  
  <p>The result I would like to expect :</p>
  
  <pre><code>    Job                 Matlab Python Pyspark Scikit-learn ... C++ Teradata City
  0   Data scientist      0      1      1       1                0   0        Paris
  1   Data architecte     0      0      0       0                0   1        Marseille
  2   Lead data scientist 1      0      0       1                1   0        Nantes
  3   Data scientist      1      0      1       0                0   1        Marseille
  4   Data scientist      0      1      0       1                1   1        Bordeaux
  </code></pre>