Python - writing and reading from a temporary file

Question

I am trying to create a temporary file that I write in some lines from another file and then make some objects from the data. I am not sure how to find and open the temp file s

Answer 1

In case the file needs to be opened a second time, e.g. read by a different process this might cause trouble on Windows OS:

Whether the name can be used to open the file a second time, while the named temporary file is still open, varies across platforms (it can be so used on Unix; it cannot on Windows NT or later).

Hence a safe solution is to create a temporary directory instead and then manually create a file therein:

import os.path
import tempfile

with tempfile.TemporaryDirectory() as td:
    f_name = os.path.join(td, 'test')
    with open(f_name, 'w') as fh:
        fh.write('')
    # Now the file is written and closed and can be used for reading.