How do I close the files from tempfile.mkstemp?

Question

On my machine Linux machine ulimit -n gives 1024. This code:

from tempfile import mkstemp  for n in xrange(1024 + 1):     f, path = mkstemp()     

fails at the last line loop with:

Traceback (most recent call last):   File "utest.py", line 4, in <module>   File "/usr/lib/python2.7/tempfile.py", line 300, in mkstemp   File "/usr/lib/python2.7/tempfile.py", line 235, in _mkstemp_inner OSError: [Errno 24] Too many open files: '/tmp/tmpc5W3CF' Error in sys.excepthook: Traceback (most recent call last):   File "/usr/lib/python2.7/dist-packages/apport_python_hook.py", line 64, in apport_excepthook ImportError: No module named fileutils 

It seems like I've opened to many files - but the type of f and path are simply int and str so I'm not sure how to close each file that I've opened. How do I close the files from tempfile.mkstemp?

Answer 1

Since mkstemp() returns a raw file descriptor, you can use os.close():

import os from tempfile import mkstemp  for n in xrange(1024 + 1):     f, path = mkstemp()     # Do something with 'f'...     os.close(f) 

Answer 2

import tempfile import os for idx in xrange(1024 + 1):     outfd, outsock_path = tempfile.mkstemp()     outsock = os.fdopen(outfd,'w')     outsock.close()