title: Pandas dataframe reset index
body: <pre><code>
  from decimal import Decimal
  import pandas as pd
  
  df = pd.DataFrame([
      [&quot;1000123797207765&quot;, 0, 129.26, 0, 29.26],
  ], columns=pd.MultiIndex.from_tuples(
      [
          (&quot;&quot;, &quot;ID&quot;),
          (&quot;2022-09-01&quot;, &quot;origin&quot;),
          (&quot;2022-09-01&quot;, &quot;checked&quot;),
          (&quot;2022-09-02&quot;, &quot;origin&quot;),
          (&quot;2022-09-02&quot;, &quot;checked&quot;),
      ]
  ))
  
  
  
                           2022-09-01         2022-09-02        
                   ID     origin checked     origin checked
  0  1000123797207765          0  129.26          0   29.26
  
  </code></pre>
  <p>As above  codes showed, I get a dataframe. Now I want to reset index to get a dataframe with below format</p>
  <pre><code>                         2022-09-01         2022-09-02        
                  ID     origin checked     origin checked
    1000123797207765          0  129.26          0   29.26
  
  </code></pre>
  <p>How can I make it? Great thanks.</p>