docs: def get_pdffilepath(pdffilename):
          """
          Returns the path for the pdf file
  
          args:
              pdffilename: string
                  returns path for the plots folder / pdffilename.pdf
          """
          return FILEPATHSTR.format(
              root_dir=ROOT_DIR, os_sep=os.sep, os_extsep=os.extsep,
              name=pdffilename,
              folder=PURPOSE.get("plots").get("folder", "plots"),
              ext=PURPOSE.get("plots").get("extension", "pdf")
          )