BUG: get_one_dimensional_median_and_error_bar returns class instead of instance #1062
Description
Describe the bug
method .get_one_dimensional_median_and_error_bar returns class, not instance, and also has different fields from what described in the api documentation
To Reproduce
For some CBCResult object result, and a parameter, for example, chirp_mass,
err = result.get_one_dimensional_median_and_error_bar("chirp_mass")
print(type(err), err)
will return
<class 'type'> <class 'bilby.core.result.summary'>
To check fields, I tried
print(err._fields)
and this returns
('median', 'lower', 'upper', 'string')
as written in api. However,
print(err.upper)
gives _tuplegetter(2, 'Alias for field number 2')
To get the expected value for 'lower' and 'upper', I had to use 'plus' and 'minus' instead. print(err.plus) gives a float value.
Expected behavior
the method giving instance, not type, and fields working as written in api
Suggested solution (optional)
I've used inspect.getsource to see what is the problem, and I found that the object summary is defined to have 'lower' and 'upper' to be fields, while the values themselves are assigned to 'plus' and 'minus'. Also, the returned value is the class summary itself, not the instance defined like summary(a, b). I think simply changing field names and return type will fix this, and maybe I could do it, but this is my first time contributing to an open project, so I'm not sure I could do it right.
Environment (please complete the following information):
- Bilby version: 2.8.0
- Installation method [e.g. conda, pip, source]: installed by uv in wsl, using Quarto for my project. However I could reproduce this in terminal
Additional context
This is the result of upper codes I got in my laptop. Sorry if this is already known issue.
