How to use ixmp.utils.diff()?

[cheolhung]

Dear Developer,

I'm just wondering how to use 'ixmp utility, diff.'
I tried 'diff' in the Westeros tutorial as attached.
It seems that something is happening(<generator object diff at 0x000001D62A98E200>), but I have no idea how to proceed hereafter.
As indicated in the documentation. I want to use 'diff' to identify differences in parameters between scenarios.

I appreciate any help you can provide.

[khaeru]

Sorry for the brevity of the docs here. An example would indeed help.

• https://docs.python.org/3/tutorial/classes.html#generators is the section of the official Python tutorial on generators, with examples.
• Here is the example in the ixmp test suite of the function being used: https://github.com/iiasa/ixmp/blob/e795853ca0605f428bb423defd85f79fd8e4ab4c/ixmp/tests/test_utils.py#L38-L135

So you should do something like:

# Iterate over parameter names and data
for name, data in diff(base, scen):
    print(name)
    print(data)
    # Any other operations on `name` or `data`, according to your needs