Resolved issue #225

[TMVKasiViswanath]

Optimized imports in the init method by implementing lazy imports. This prevents unnecessary imports of unused classes, ensuring that only the required classes are imported when needed. This reduces memory usage and improves efficiency. I have tested this to confirm that the changes work as expected.

[4n4nd]

@TMVKasiViswanath all tests seem to be failing. Could you give it a look?

[harshad16]

great initiative
getattr in init.py might increase the maintainability of the module , right ?

I'm also not able to follow, how this fixes the #225 request.
as the request there is to, split the module with main dependency and optional dependency.
The current installation of prometheus_api_client bring in pandas and additional package that is only required for Metrics class usage but not for PrometheusConnect operation.
For fixing the issue, we would need to change the packaging of the module.

[harshad16]

The additional classes also need to be adjusted, if we are explicitly defining each class available with prometheus_api_client.

from prometheus_api_client import PrometheusApiClientException

this would fails with current implementation.

[TMVKasiViswanath]

yes, I forgot to add 2 more imports in the init file

[TMVKasiViswanath]

@TMVKasiViswanath all tests seem to be failing. Could you give it a look?

Yes I have made the changes and made the new commit to it

[TMVKasiViswanath]

@4n4nd The test failures are not caused by my changes. The errors indicate that demo.robustperception.io:9090 is unreachable ([Errno 101] Network is unreachable).

To verify, I set up a local Prometheus instance, pointed PrometheusConnect to it, and ran the tests. Everything passed successfully.(All the 44 test cases in the tests folder got executed)

This suggests that the issue is with the availability of the demo server, not my modifications to init.py. Once the server is back up, rerunning the workflow should make the tests pass without any issues.