smart_open() printing lots of output during transfer when not desired

When I use smart_open() (connecting to s3) it prints a ton of stuff like this:

...
133
142
170
154
144
137
147
...

Can I turn that off? What is it? There’s a lot of it, I don’t want it to print this.

Also some docs around the project would be greatly appreciated. For example another question (because there’s no docs):

How do I know if the s3 connection is using multipart upload or uploading serially? Maybe you guys always have it do multipart? I wouldn’t know though, all I see is it seems like you have to get some parameters correct for it to use multipart upload

[mpenkov]

Turns out this is expected behavior. The Python interpreter outputs the result of the last command, if it is not None. For example:

>>> 1 + 2
3

The .write method returns the number of bytes written. So

>>> fout.write(b'hello world')
9

You can suppress that by assigning to a throwaway variable:

>>> _ = fout.write(b'hello world')

[ampersand-five]

I have smart-open 1.8.0. I installed it with pip3 install smart-open. I didn’t make any edits to the source code.

I was thinking it would be nice to use smart-open to stream from a url into s3 w/o writing the data to a local area first. That’s why I used it to open two sources and read from one and write the reads into the other. It’s quite handy if it can work.

I couldn’t get it to print in a similar way when I did them separately. And there’s nothing special about 44413, that’s just how many lines of ouput I got when doing the example code I provided above. I gave the count instead of pasting all of the lines, especially since they’re all the same. i.e. they are all just a number around 150.