old_contents: # Create a program multiplicationTable.py that takes a number N from the
  # command line and creates an N×N multiplication table in an Excel spreadsheet.
  # Row 1 and column A should be used for labels and should be in bold.
  
  import sys
  import openpyxl
  from openpyxl.styles import Font
  
  # Get argument from commandline
  size = int(''.join(sys.argv[1]))
  
  # Build table
  wb = openpyxl.Workbook()
  sheet = wb.active
  row = []
  for i in range(1, size + 1):
      row.append(i)
  column = row
  
  # Make labels
  for element in row:
      sheet.cell(row=1, column=element + 1).value = element
      sheet.cell(row=element + 1, column=1).value = element
  col = sheet.column_dimensions['A']
  col.font = Font(bold=True)
  ro = sheet.row_dimensions[1]
  ro.font = Font(bold=True)
  
  # Calculate table values
  for element in row:
      for element2 in column:
          sheet.cell(row=element + 1, column=element2 + 1).value = element * element2
  
  # Save table
  wb.save("multTable.xlsx")
  
new_contents: """Multiplication table
  
  Create a program multiplicationTable.py that takes a number N from the
  command line and creates an N×N multiplication table in an Excel spreadsheet.
  Row 1 and column A should be used for labels and should be in bold.
  
  """
  
  
  def main():
      import sys
      import openpyxl
      from openpyxl.styles import Font
  
      # Get argument from commandline
      size = int(''.join(sys.argv[1]))
  
      # Build table
      wb = openpyxl.Workbook()
      sheet = wb.active
      row = []
      for i in range(1, size + 1):
          row.append(i)
      column = row
  
      # Make labels
      for element in row:
          sheet.cell(row=1, column=element + 1).value = element
          sheet.cell(row=element + 1, column=1).value = element
      col = sheet.column_dimensions['A']
      col.font = Font(bold=True)
      ro = sheet.row_dimensions[1]
      ro.font = Font(bold=True)
  
      # Calculate table values
      for element in row:
          for element2 in column:
              sheet.cell(row=element + 1, column=element2 + 1).value = element * element2
  
      # Save table
      wb.save("multTable.xlsx")
  
  
  if __name__ == '__main__':
      main()
  
subject: Update P1_multiplicationTable.py added docstring and wrapped in main() function