W&B: More improvements and refactoring (#4205)

* Improve docstrings and run names

* default wandb login prompt with timeout

* return key

* Update api_key check logic

* Properly support zipped dataset feature

* update docstring

* Revert tuorial change

* extend changes to log_dataset

* add run name

* bug fix

* bug fix

* Update comment

* fix import check

* remove unused import

* Hardcore .yaml file extension

* reduce code

* Reformat using pycharm

* Remove redundant try catch

* More refactoring and bug fixes

* retry

* Reformat using pycharm

* respect LOGGERS include list

Co-authored-by: Glenn Jocher <glenn.jocher@ultralytics.com>

utils/loggers/__init__.py

@@ -48,12 +48,12 @@ class Loggers():
             self.tb = SummaryWriter(str(s))
 
         # W&B
-        try:
-            assert 'wandb' in self.include and wandb
-            run_id = torch.load(self.weights).get('wandb_id') if self.opt.resume else None
+        if wandb and 'wandb' in self.include:
+            wandb_artifact_resume = isinstance(self.opt.resume, str) and self.opt.resume.startswith('wandb-artifact://')
+            run_id = torch.load(self.weights).get('wandb_id') if self.opt.resume and not wandb_artifact_resume else None
             self.opt.hyp = self.hyp  # add hyperparameters
             self.wandb = WandbLogger(self.opt, run_id)
-        except:
+        else:
             self.wandb = None
 
         return self