lost and found ( for me ? ): create a temporary text file under directory or in memory

small tips.

Here is how to create a temporary text file with python ‘tempfile’ module.

the first one is creating a temporary text file under /tmp directory and the second one is in memory

mint-note untitled # cat virtual_file01.py

__author__ = 'root'

import tempfile

import os

# create a temporary text file under /tmp directory

temp_file = tempfile.NamedTemporaryFile(mode='w+t',suffix='_suffix',prefix='prefix_',dir='/tmp')

try:

temp_file.writelines(['first\n','second\n'])

temp_file.seek(0)

print temp_file

print temp_file.name

for line in temp_file:

print line.rstrip()

finally:

temp_file.close()

# create a virtual text file in memory

temp_memory_file = tempfile.SpooledTemporaryFile(mode='w+t',max_size=10000,prefix='prefix_',suffix='_suffix')

try:

temp_memory_file.writelines(['first\n','second\n'])

temp_memory_file.seek(0)

print temp_memory_file

print temp_memory_file.name

for line in temp_memory_file:

print line.rstrip()

finally:

temp_memory_file.close()

mint-note untitled # python virtual_file01.py

/tmp/prefix_qONxA9_suffix

first

second

<tempfile.SpooledTemporaryFile instance at 0x7f2179bde878>

None

first

second

lost and found ( for me ? )