windows 如何模拟“锁定”文件（具有写锁的文件）
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How can I simulate a "locked" file (one which has a write lock)
提问by Daisetsu
I am trying to debug a problem where users occasionally have locked files which they try to open. The code appears to have correct exception handling but users are still reporting seeing error messages. How can I simulate a locked file so that I can debug this myself?
我正在尝试调试用户偶尔锁定他们尝试打开的文件的问题。该代码似乎具有正确的异常处理，但用户仍然报告看到错误消息。如何模拟锁定的文件以便我可以自己调试？
EDIT: For Windows.
编辑：对于 Windows。
采纳答案by Luis Siquot
depends, but in case, MS word locks
if you are wonderig if your application lock files and it do not relase locks:
just modify a bit your aplication (to create a testapp) and never close the file (and keep it runnig)
视情况而定，但万一，
如果您想知道您的应用程序是否锁定文件并且它不释放锁定，则 MS 字锁定：
只需修改一点您的应用程序（创建一个测试应用程序）并且永远不要关闭文件（并保持运行）
回答by Zahra
回答by Mayra Delgado
I used LockFileEx function from the Windows API to write a unittest in Python. This worked well for me (shutil.copy() with a locked target fails).
我使用 Windows API 中的 LockFileEx 函数在 Python 中编写单元测试。这对我很有效（shutil.copy() 锁定目标失败）。
import win32con
import win32file
import pywintypes
p = "yourfile.txt"
f = file(p, "w")
hfile = win32file._get_osfhandle(f.fileno())
flags = win32con.LOCKFILE_EXCLUSIVE_LOCK | win32con.LOCKFILE_FAIL_IMMEDIATELY
win32file.LockFileEx(hfile, flags, 0, 0xffff0000, pywintypes.OVERLAPPED())
See: https://msdn.microsoft.com/en-us/library/windows/desktop/aa365203%28v=vs.85%29.aspx
请参阅：https: //msdn.microsoft.com/en-us/library/windows/desktop/aa365203%28v=vs.85%29.aspx
回答by SpongeB0B
I am using this command prompt
我正在使用这个命令提示符
type yourfile.txt | more
to insert inside yourfile.txta very long text of "few pages" and want to pipe via | moreto batch the insertion.
However the file seems to lock, any reason why?
插入yourfile.txt一个很长的“几页”文本，并希望通过管道| more批量插入。但是文件似乎锁定了，有什么原因吗？
