new feature: Return detailed error message in python binding

[Xuanwo]

Feature Description

Return a detailed error message in the Python binding. For instance, use format!({err:?}) instead of simply err.to_string().

Problem and Solution

Our Python errors are overly simplistic and lack detailed underlying reasons, making it difficult to debug issues such as #5483.

Additional Context

No response

Are you willing to contribute to the development of this feature?

• Yes, I am willing to contribute to the development of this feature.

[VigneshSK17]

hi i'd like to work on this issue

[Xuanwo]

Hi, @VigneshSK17, I think we need to fix it here:

opendal/bindings/python/src/errors.rs

Lines 60 to 74 in 6ca3eab

	pub fn format_pyerr(err: ocore::Error) -> PyErr {
	match err.kind() {
	ocore::ErrorKind::Unexpected => Unexpected::new_err(err.to_string()),
	ocore::ErrorKind::Unsupported => Unsupported::new_err(err.to_string()),
	ocore::ErrorKind::ConfigInvalid => ConfigInvalid::new_err(err.to_string()),
	ocore::ErrorKind::NotFound => NotFound::new_err(err.to_string()),
	ocore::ErrorKind::PermissionDenied => PermissionDenied::new_err(err.to_string()),
	ocore::ErrorKind::IsADirectory => IsADirectory::new_err(err.to_string()),
	ocore::ErrorKind::NotADirectory => NotADirectory::new_err(err.to_string()),
	ocore::ErrorKind::AlreadyExists => AlreadyExists::new_err(err.to_string()),
	ocore::ErrorKind::IsSameFile => IsSameFile::new_err(err.to_string()),
	ocore::ErrorKind::ConditionNotMatch => ConditionNotMatch::new_err(err.to_string()),
	_ => Unexpected::new_err(err.to_string()),
	}
	}