title: Append individual (and multiple) sheets spread over multiple excel worksheets in a folder
body: <p>I have a folder containing 19 Excel worksheets with each worksheet containing 16 sheets inside it. While the name of the excel files are different, the name of individual sheets inside them is same i.e. they start from "Sheet 1" and go till "Sheet 16". What I have to do is append each sheet at the end of the next one and continue the same to get a new excel file containing only one sheet. (In other words, sheet 1 from file two (say, B) will be appended at the end of sheet 1 from file one (say, A) and sheet 1 from file three (say, C) will be appended at the end of the above two files containing sheet 1 from files A and B, respectively and so on untill every file is added). </p>
  
  <p>I have tried VBA codes to extract each sheets and then rename each of them, convert them to CSV and then combine them. But this process takes too much time and there are many such folders. I would be grateful if I can get a VBA code, a python code or a R code to do all of these automatically (any of these will do. Explanations, if any, regarding the code will be helpful and appreciated. Thanks in advance).</p>