windows XP中的索引节点号

为什么这个程序表现出模棱两可的行为?
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导入统计
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#IMPORT类型
file_name = raw_input("输入文件名:")
打印file_name,"信息"
st = os.stat(file_name)
打印"模式"," =>",oct(stat.s_imode(st [stat.st_mode]))
打印"类型"," =>",
如果stat.s_isdir(st [stat.st_mode]):
打印"目录"
Elif Stat.s_isreg(ST [Stat.st_mode]):
打印"常规"
Elif Stat.s_islink(st [stat.st_mode]):
打印"链接"
打印"文件大小"," =>",st [stat.st_size]
打印" inode number"," =>",st [stat.st_ino]
打印"设备Inode属于",=>",st [stat.st_dev]
打印"指向此inode的链接数"," =>",st [stat.st_nlink]
打印"最后访问"," =>",time.ctime(st [stat.st_atime])
打印"最后修改"," =>",time.ctime(st [stat.st_mtime])
打印" Inode更改"," =>",time.ctime(st [stat.st_ctime])
我在Python 2.5中的Winows XP SP2中运行了该程序.