Can't remove a file which created by `tempfile.mkstemp()` on Windows

Question

Here's my example code:

import os
from tempfile import mkstemp

fname = mkstemp(suffix='.txt', text=True)[1]
os.remove(fname)

When I run it on my Linux, it works fine. But when I run it on my Windows XP using Python 3.4.4, it raised the following error:

Traceback (most recent call last):
  File "C:\1.py", line 5, in <module>
    os.remove(fname)
PermissionError: [WinError 32] The process cannot access the file because it is being used by another process: 'C:\\DOCUME~1\\IEUser\\LOCALS~1\\Temp\\tmp3qv6ppcf.txt'

However, when I use tempfile.NamedTemporaryFile() to create a temp file and close it, it removed automatically.

Why Windows can't remove files created by mkstemp? Where am I doing wrong?

Answer 1

From the documentation:

Creates a temporary file in the most secure manner possible. [...]

[...]

mkstemp() returns a tuple containing an OS-level handle to an open file (as would be returned by os.open()) and the absolute pathname of that file, in that order.

fd, fname = mkstemp(suffix='.txt', text=True)
os.close(fd)
os.remove(fname)