使用Python实现XLS和XLSX之间的相互转换

from spire.xls import *
from spire.xls.common import *
 
# 加载XLSX文件
workbook = Workbook()
workbook.LoadFromFile("示例.xlsx")
 
# 将XLSX文件另存为XLS格式
workbook.SaveToFile("Xlsx转Xls.xls", ExcelVersion.Version97to2003)
workbook.Dispose()

from spire.xls import *
from spire.xls.common import *
 
# 加载XLS文件
workbook = Workbook()
workbook.LoadFromFile("示例.xls")
 
# 将XLS文件另存为XLSX格式
workbook.SaveToFile("Xls转Xlsx.xlsx", ExcelVersion.Version2016)
workbook.Dispose()

import win32com.client as win32  # 需安装pywin32
import os.path
import glob

excel = win32.gencache.EnsureDispatch('Excel.Application')

#简易使用方法
#filename = r'E:\xlsx\1.xls'
#wb = excel.Workbooks.Open(filename)
#wb.SaveAs(filename+'x', FileFormat=51)  #FileFormat=51 是 .xlsx 的扩展
#wb.Close()                              #FileFormat=56 是 .xls 的扩展
#excel.Application.Quit()

def xls2xlsx(xls_path, xlsx_path):
    # xls_path参数为待转换的xls文件所在文件夹
    # xlsx_path参数为转换完成的xlsx文件保存文件夹
    # 当xlsx保存文件夹存在同名原xls时，会弹窗提示是否替换，建议保存至空文件夹​

    path_list = glob.glob(xls_path + '\\*.xls')  # 获取文件夹下所有xls
    for file in path_list:
        filename = os.path.basename(file).replace('.xls', '.xlsx')  # 获取文件名
        wb = excel.Workbooks.Open(file)
        wb.SaveAs(xlsx_path + '\\' + filename, FileFormat=51)  # xlsx为51
        wb.Close()
    excel.Application.Quit()
    print('xls2xlsx转换完成')

def xlsx2xls(xlsx_path, xls_path):
    # xlsx_path参数为待转换的xlsx文件所在文件夹
    # xls_path参数为转换完成的xls文件保存文件夹
    # 当xls保存文件夹存在同名原xlsx时，会弹窗提示是否替换，建议保存至空文件夹​

    path_list = glob.glob(xlsx_path + '\\*.xlsx')  # 获取文件夹下所有xlsx
    for file in path_list:
        filename = os.path.basename(file).replace('.xlsx', '.xls')  # 获取文件名
        wb = excel.Workbooks.Open(file)
        wb.SaveAs(xls_path + '\\' + filename, FileFormat=56)  # xls为56
        wb.Close()
    excel.Application.Quit()
    print('xlsx2xls转换完成')


if __name__ == '__main__':
    xls_path = r'E:\xlsx\xls'
    xlsx_path = r'E:\xlsx\xlsx'
    xls2xlsx(xls_path, xlsx_path)
    #xlsx2xls(xlsx_path, xls_path)

Function xls2xlsx(xls_path$, save_path$)
    '将xls_path文件夹中所有xls文件转为xlsx格式，保存至save_path文件夹；注意同名覆盖
    Dim fso As Object, wb As Workbook, save_file$
    Application.ScreenUpdating = False  '关闭屏幕更新，加快程序运行
    Application.DisplayAlerts = False   '不显示警告信息
    Set fso = CreateObject("Scripting.FileSystemObject")
    If Not fso.FolderExists(save_path) Then fso.CreateFolder (save_path)  '创建文件夹
    For Each f In fso.GetFolder(xls_path).Files  '遍历文件夹里文件
        If fso.GetExtensionName(f.Name) = "xls" Then
            save_file = save_path & "\" & f.Name & "x"  '保存文件全名（文件路径、文件名、扩展名）
            Set wb = Workbooks.Open(f)
            wb.SaveAs filename:=save_file, FileFormat:=xlOpenXMLWorkbook
            wb.Close (False)
        End If
    Next
    Application.ScreenUpdating = True
    Application.DisplayAlerts = True
End Function

Function xlsx2xls(xlsx_path$, save_path$)
    '将xlsx_path文件夹中所有xlsx文件转为xls格式，保存至save_path文件夹；注意同名覆盖
    Dim fso As Object, wb As Workbook, save_file$
    Application.ScreenUpdating = False  '关闭屏幕更新，加快程序运行
    Application.DisplayAlerts = False   '不显示警告信息
    Set fso = CreateObject("Scripting.FileSystemObject")
    If Not fso.FolderExists(save_path) Then fso.CreateFolder (save_path)  '创建文件夹
    For Each f In fso.GetFolder(xlsx_path).Files  '遍历文件夹里文件
        If fso.GetExtensionName(f.Name) = "xlsx" Then
            save_file = save_path & "\" & fso.GetBaseName(f.Name) & ".xls"  '保存文件全名（文件路径、文件名、扩展名）
            Set wb = Workbooks.Open(f)
            wb.SaveAs filename:=save_file, FileFormat:=xlExcel8
            wb.Close (False)
        End If
    Next
    Application.ScreenUpdating = True
    Application.DisplayAlerts = True
End Function

Private Sub xls和xlsx转换测试()
    Dim file_path$, save_path$
    file_path = "E:\测试\xls"
    save_path = "E:\测试\xlsx"
    a = xls2xlsx(file_path, save_path)  '2种调用方式
'    Call xlsx2xls(save_path, file_path)
End Sub