title: How to change numeric data format for html output
body: <p>I have code to produce a pandas dataframe and send email in html format.<br>
  The problem I have is hard to change the scientific format of numeric numbers to general in style<br></p>
  
  <p>I already tried to set float format, but it did not work. </p>
  
  <pre><code>pd.options.display.float_format = '{:20,.2f}'.format
  </code></pre>
  
  <p>output:</p>
  
  <pre><code>Col A        Col B
  1.00E+06    2.28E+06
  3.00E+07    -2.54E+07
  </code></pre>
  
  <p>expected out:</p>
  
  <pre><code>Col A        Col B
  1000420      2281190
  30030200    -25383100
  </code></pre>