Calling Bird2 from Python script fails

[Stavros Konstantaras]

Hi Toke,

Yes I do, I didn't share the whole code snippet but my_file.close() was immediately below that line. __ 


And after closing the output file I proceed on calling subprocess with the "birdc configure" command.

Best Regards
Stavros


On 28/11/2022, 12:54, "Toke Høiland-Jørgensen" <toke at toke.dk> wrote:

    Stavros Konstantaras via Bird-users <bird-users at trubka.network.cz>
    writes:

    > Hi Gerdriaan,
    >
    > Thank you for your interest and asking those questions. Finally I found the issue and luckily was not a Bird2's fault but some weird python3 behavior. For the record:
    >   - The following does not work:
    >      my_file.write(template.render(nawas_routes).encode('ascii', 'ignore').decode('ascii'))
    >
    >   - The following works:
    >     new_data = template.render(nawas_routes).encode('ascii', 'ignore').decode('ascii')
    >     my_file.write(new_data)
    >
    >
    > Although the first expression is (syntactically and logically)
    > correct, by the time the "birdc configure" was called/executed the
    > config file was empty. Even if I put a 1-2-3 second time sleep the
    > file was still empty and thus, Bird2 had nothing to read. Once, the
    > Python3 script completes successfully and exits to the CLI, you could
    > see however the new data in the "my_file. Thus, it was quite confusing
    > to understand and find the issue.

    Are you calling my_file.close() anywhere? Otherwise, the data will stay
    in a buffer until the file *does* get closed, which will happen when the
    Python script exits...

    -Toke