按数字批量重命名文件

    def plRename():
        sourcename = os.listdir('./')
        for index, value in enumerate(sourcename):
            try:
                os.rename(value, str(index) + '.' + value.split('.')[-1])
            except EnvironmentError:
                print(EnvironmentError)
                print(f'{value}失败')
        input('完成！')