title: Is there any method to get the number of rows and columns present in .xlsx sheet using openpyxl?
body: <p>Is there any method to get the number of rows and columns present in .xlsx sheet using openpyxl ? 
  In xlrd,</p>
  
  <pre><code>     sheet.ncols 
       sheet.nrows
  </code></pre>
  
  <p>would give the column and row count. 
  Is there any such method in openpyxl ?</p>