title: Joining two dataframes and filling values with pandas
body: <p>I have the following two dataframes:</p>
  <pre><code>df1:
            Value 1
  0  Team_1   5
  1  Team_2   8
  2  Team_1   10   
  3  Team_3   9
  4  Team_2   3
  
  df2:
            Value 2
  0  Team_1   21
  1  Team_2   32
  2  Team_3   53
  </code></pre>
  <p>I'd like to join them so that I get the following:</p>
  <pre><code>          Value 1    Value 2
  0  Team_1   5           21
  1  Team_2   8           32
  2  Team_1   10          21
  3  Team_3   9           53
  4  Team_2   3           32
  </code></pre>
  <p>I'm assuming I'll have to perform a join of some sort but I'm not sure which type I should use and whether I'd need to take any steps after that to get the desired output.</p>
  <p>Thanks in advance!</p>