title: Search (row values) data from another dataframe
body: <p>I have two dataframes, df1 and df2 respectively.<br>
  In one dataframe I have a list of search values (Actually Col1)</p>
  
  <pre><code>Col1   Col2
  A1      val1, val2
  B2      val4, val1
  C3      val2, val5
  </code></pre>
  
  <p>I have another dataframe where I have a list of items</p>
  
  <pre><code>value   items
  val1    apples, oranges
  val2    honey, mustard
  val3    banana, milk
  val4    biscuit
  val5    chocolate
  </code></pre>
  
  <p>I want to iterate though the first DF and try to use that val as key to search for items from the second DF</p>
  
  <p>Expected output:</p>
  
  <pre><code>A1     apples, oranges, honey, mustard
  B2     biscuit, appleas, oranges
  C3     honey, mustard, chocolate
  </code></pre>
  
  <p>I am able to add the values into dataframe and iterate through 1st DF</p>
  
  <pre><code>for index, row in DF1:
       #list to hold all the values
       finalList = []
       list = df1['col2'].split(',')
       for i in list:
            print(i)
  </code></pre>
  
  <p>I just need help to fetch values from the second dataframe. 
  Would appreciate any help. Thanks.</p>