Clean MapsManager

[camillebrianceau]

This PR refactors the training methods in the trainer module.

• First, I removed the _train_multi method. Now, the train_single method is used for both single and multi-network training. In a future PR, we will need to apply the same approach to the _train_ssda method.
• I also moved the loops for split in split_manager.iterate(): and for network in range(num_network): out of the train_single method. As a result, the new _train method will be the entry point for trainer.train().
• Additionally, I added an example of the future API in API_test.py.
• I created a TmpConfig, which is currently unused but retained as a model for future reference.

Next PR:

• Plan to extract the MapsManager, Validator, and Splitter from the trainer.

[pep8speaks]

Hello @camillebrianceau! Thanks for updating this PR. We checked the lines you've touched for PEP 8 issues, and found:

• In the file clinicadl/API_test.py:

Line 43:9: E266 too many leading '#' for block comment
Line 70:9: E266 too many leading '#' for block comment

• In the file clinicadl/maps_manager/tmp_config.py:

Line 53:1: E266 too many leading '#' for block comment

Comment last updated at 2024-10-01 13:49:26 UTC

[thibaultdvx]

LGTM, except suspect prints.