AttributeError: 'function' object has no attribute 'flush'

[jhmenke]

I am trying a simple example to replace tqdm with the alive_bar
with alive_bar(int(self.ann_params["epochs"])) as pbar:

Unfortunately, this line raises an Exeption:

Exception ignored in: <function alive_bar at 0x7fefe58f6ae8>
AttributeError: 'function' object has no attribute 'flush'```

I am using Python 3.7.3 on elementaryOS (Ubuntu derivative). Am i doing something wrong?

[jonturneratduke]

If my experience on MacOS is any guide, you're sending some output to the console which interferes with alive_bar's call to sys.stdout.flush().

[rsalmei]

Hey @jhmenke, I'm using 3.7.3 myself and this error is not triggered.
Could you help me debugging this?
I didn't try it on ubuntu (or any derivatives actually), but should work.
Is this Python CPython?

Actually, I did try on Ubuntu 18.04, Python 3.7.3 and 2.7.15, installed with pyenv, and it works.

[rsalmei]

I was looking into Python Streams (https://docs.python.org/2.7/library/io.html#module-io), and really there are other methods a stream should have.

Are your code by any chance calling flush() directly?

[jhmenke]

Okay, so it works in the regular terminal.

I was using PyCharm and i guess that somehow has a different terminal which does not work. Interestingly, tqdm works just fine so i guess something has to be checked and done differently.

Thanks for your comments though!

This is related for tqdm: tqdm/tqdm#307 (comment)

[rogerio-geru]

No problem!

I can release a version with flush support, maybe it would work.
Anyway, I was not aware of this pycharm terminal problem. I'll try it there and report back.

[rogerio-geru]

Great news @jhmenke, I've made it work in Pycharm! At least in the latest 2019.2 it did work.
Tonight I'll release the 1.0.1 version with pycharm support.

It's curious I did not have the flush error you reported.
I'll let you know when it's available, and please tell me if it does work for you.

[rsalmei]

Fixed and released in #5.
Could you please confirm it does work for you now? @jhmenke

[jhmenke]

With force_tty=True it works in PyCharm, great!

Thank you so much for your time.

[rsalmei]

You're welcome. 👍