title: How to append a row to another dataframe
body: <p>I have dataframes <code>df1</code> and <code>df2</code> both with columns <code>["Ticker", "Adj.Factor", "Date"]</code>. I want to add to <code>df2</code> the complete row from <code>df1</code> if the value of "Adj.Factor" in that row in <code>df1</code> equals to <code>0</code>. </p>
  
  <p>I have the following code.</p>
  
  <pre><code>for x in range(tot_len):
      if df1.iloc[x]['Adj.Factor'] == 0:
          df2.append(df1.iloc[x])  --&gt; not working.
  </code></pre>
  
  <p>`</p>
  
  <p>I have tried printing the values and it shows the correct output. But the values are not appended to df2.</p>