[Bug]: monty's zopen expects keyword mode to be set

[FabiPi3]

Code snippet

with zopen(path, "w", encoding=encoding) as f:
    # do something

To be more precise, its not about passing something as mode, but it should contain "t" or "b".

What happened?

I am using maggma, with a new monty version I get this warning.

Version

0.71.1

Which OS?

• MacOS
• Windows
• Linux

Log output

/path/to/python/lib/python3.12/site-packages/maggma/stores/mongolike.py:687: FutureWarning: We strongly discourage using implicit binary/text 
`mode`, and this would not be allowed after 2025-06-01. I.e. you should pass t/b in `mode`.

[rkingsbury]

Hi @FabiPi3 , thanks for reporting. This has already been fixed in #1021 . Please update your maggma install and the warning should go away (but if it doesn't , please reopen).

[rkingsbury]

Edit: actually I see that you are already on the latest version. It appears the monty warning has changed (it previously instructed to set mode='r'). I will try to update maggma soon to use t instead, or feel free to open a PR if you're able.

[FabiPi3]

Actually if I understand correctly, mode="rt" would be the best.

BTW it also applies for lines 714 and 764.