了解Python统计时间在窗口上

Question

以下脚本创建一个文本文件，并尝试以不同的方式更改stat.st_ctime：

# -*- coding: UTF-8 -*-

import platform
import time
import os.path

print(platform.platform())
print(platform.machine())
print(platform.python_version())

fn = 'Hanswurst.txt'
if os.path.exists(fn):
    print('Leaving. File already exist.')
    quit()

file = open(fn, 'w')
file.close()
print('\nCreation time:')
print(time.ctime(os.stat(fn).st_ctime))

time.sleep(3)

os.utime(fn, None)
print('\nCreation time after call of utime. I guess this is ok:')
print(time.ctime(os.stat(fn).st_ctime))

time.sleep(3)

file = open(fn, 'w')
file.write('Hanswurst is dead.')
file.close()
print('\nBut also after another file with the same name is created ctime stays the same:')
print(time.ctime(os.stat(fn).st_ctime))

time.sleep(3)

os.remove(fn)
print('\nFile does exist?', os.path.exists(fn))
file = open(fn, 'w')
file.write('Hanswurst is dead.')
file.close()
print('\nEven if the file is deleted before ctime stays the same:')
print(time.ctime(os.stat(fn).st_ctime))

os.remove(fn)

在我的Windows 7机器上，64位Python 3.2创建了以下输出：

^{pr2}$

为什么stat.st_ctime从未改变过？如果我以后再开始写剧本，这也是真的。我要怎么做才能改变它？在