[python] secure tempfile creation/use usual examples out there seems to ignore the file descriptor returned.

securetemp.py

from os import fdopen, remove
from tempfile import mkstemp

# http://docs.python.org/2/library/tempfile.html#tempfile.mkstemp
fd, filename = mkstemp(prefix='example')

# note the usage of fdopen/fd instead of open/filename
with fdopen(fd, 'w') as f:
    # do something with the file
    pass

# clean up after yourself, mkstemp does not delete the created file
remove(filename)