XLS to XLSX Converter

xls2xlsx.py

import os
import sys
from datetime import datetime

# pip download openpyxl xlrd
sys.path.append('./et_xmlfile.whl')
sys.path.append('./openpyxl.whl')
sys.path.append('./xlrd.whl')
from openpyxl import Workbook
import xlrd

# Convert XLS file to XLSX
def convert(input, output):
    # Open XLS file.
    workbook_xls = xlrd.open_workbook(input)
    
    # Create XLSX file workbook.
    workbook_xlsx = Workbook()
    sheet_xlsx = workbook_xlsx.active

    # Loop through all available sheets in the XLS file.
    for sheet_idx in range(workbook_xls.nsheets):
        sheet_xls = workbook_xls.sheet_by_index(sheet_idx)
        
        # Create sheet in the XLSX file.
        sheet_xlsx = workbook_xlsx.active if sheet_idx == 0 else workbook_xlsx.create_sheet(title=sheet_xls.name)

        # Loop through all available rows and columns in the sheet.
        for row in range(sheet_xls.nrows):
            for col in range(sheet_xls.ncols):
                cell_type = sheet_xls.cell_type(row, col)
                value = sheet_xls.cell_value(row, col)

                # Format date values properly.
                if cell_type == xlrd.XL_CELL_DATE:
                    value = datetime(*xlrd.xldate_as_tuple(value, workbook_xls.datemode))

                # Copy the cell data
                sheet_xlsx.cell(row=row + 1, column=col + 1).value = value

    # Save XLSX file.
    workbook_xlsx.save(output)

def main():
    # Return if no input file was provided.
    if len(sys.argv) < 2: return

    # Define input/output filenames.
    input = sys.argv[1]
    output = sys.argv[2] if len(sys.argv) > 2 else f'{os.path.splitext(input)[0]}.xlsx'

    # Start format conversion.
    convert(input, output)

# Run script.
main()