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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?
405
tempfile. mkstemp (suffix=None, prefix=None, dir=None, text=False) Creates a temporary file in the most secure manner possible. There are no race conditions in the file's creation, assuming that the platform properly implements the os. O_EXCL flag for os.
gettempdir() to get the directory where all the temp files are stored. After running the program, if you go to temp_dir (which is /tmp in my case – Linux), you can see that the newly created file 3 is not there. This proves that Python automatically deletes these temporary files after they are closed.
Introduction. Temporary files, or "tempfiles", are mainly used to store intermediate information on disk for an application. These files are normally created for different purposes such as temporary backup or if the application is dealing with a large dataset bigger than the system's memory, etc.
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) 
import tempfile import os for idx in xrange(1024 + 1): outfd, outsock_path = tempfile.mkstemp() outsock = os.fdopen(outfd,'w') outsock.close() If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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