Writing to an existing file without overwriting/erasing

Question

My goal is quite simple, but I couldn't find it on the guide for configobj. When I run my code I want it to write to a file but not erase what there's in the file already.

I would like everytime I run this it should write underneath what's already in the file

This is my current code: That erase/overwrite what's inside the dasd.ini already

from configobj import ConfigObj

config = ConfigObj()
config.filename = "dasd.ini"
#
config['hey'] = "value1"
config['test'] = "value2"
#
config['another']['them'] = "value4"
#
config.write()

Answer 1

this would be remarkably simpler if configobj accepted a file-like object instead of a file name. This is a solution i offered in comments.

import tempfile
with tempfile.NamedTemporaryFile() as t1, tempfile.NamedTemporaryFile() as t2, open('dasd.ini', 'w') as fyle:
    config = ConfigObj()
    config.filename = t1.file.name
    config['hey'] = "value1"
    config['test'] = "value2"
    config['another']['them'] = "value4"
    config.write()
    do_your_thing_with_(t2)
    t1.seek(0)
    t2.seek(0)
    fyle.write(t2.read())
    fyle.write(t1.read())