title: Using str.split for pandas dataframe values based on parentheses location
body: <p>Let's say I have the following dataframe series df['Name'] column: </p>
  
  <pre><code>         Name
         'Jerry'
    'Adam (and family)'
  'Paul and Hellen (and family):\n'
  'John and Peter (and family):/n'
  </code></pre>
  
  <p>How would I remove all the contents in Name after the first parentheses? </p>
  
  <pre><code>df['Name']= df['Name'].str.split("'(").str[0] 
  </code></pre>
  
  <p>doesn't seem to work and I don't understand why? </p>
  
  <p>The output I want is </p>
  
  <pre><code>         Name
         'Jerry'
          'Adam'
      'Paul and Hellen'
      'John and Peter'
  </code></pre>
  
  <p>so everything after the parentheses is deleted.</p>