title: If one row in two columns contain the same string python pandas
body: <p>I have a dataframe looking like this:</p>
  
  <pre><code>    id      k1        k2         same
      1    re_setup    oo_setup   true
      2    oo_setup    oo_setup   true
      3    alerting    bounce     false
      4    bounce      re_oversetup   false
      5    re_oversetup    alerting   false
      6    alerting_s  re_setup   false
      7    re_oversetup    oo_setup   true
      8    alerting    bounce     false
  </code></pre>
  
  <p>So, I need to classified rows where string 'setup' is contained or not.</p>
  
  <pre><code>And simple output would be:
      id      k1        k2         same
      1    re_setup    oo_setup   true
      2    oo_setup    oo_setup   true
      3    alerting    bounce     false
      4    bounce      re_setup   false
      5    re_setup    alerting   false
      6    alerting_s  re_setup   false
      7    re_setup    oo_setup   true
      8    alerting    bounce     false
  </code></pre>
  
  <p>I've tried something with this, but as I expact, I have error with selecting multiple columns. </p>
  
  <pre><code>data['same'] = data[data['k1', 'k2'].str.contains('setup')==True]
  </code></pre>