title: return any value larger than three for columns with similar names
body: <p>I have a dataframe similar to this</p>
  <pre><code>df_col1 df_col2 df_col3 df_col4 id name
  3          4      5        2     1  a
  2          3      2        1     2  d
  2          1      1        2     3  x
  </code></pre>
  <p>This dataframe is very large</p>
  <p>if I want to return any value with a column name df_col larger than 3, is there anyway I can make the code run faster. My current code is</p>
  <pre><code>df.filter(like='df_') &gt; 3
  </code></pre>
  <p>this runs very slow, is it possible to make it faster?</p>
  <p>PS: I want to get the value &gt; 3 not True or False</p>