remove warning if only one implementation exists

brokkoli71 · brokkoli71 · commit 601bd6aa411c · 2024-12-18T14:36:20.000+01:00
diff --git a/src/zarr/registry.py b/src/zarr/registry.py
@@ -138,6 +138,8 @@ def get_codec_class(key: str, reload_config: bool = False) -> type[Codec]:
 
     config_entry = config.get("codecs", {}).get(key)
     if config_entry is None:
+        if len(codec_classes) == 1:
+            return next(iter(codec_classes.values()))
         warnings.warn(
             f"Codec '{key}' not configured in config. Selecting any implementation.", stacklevel=2
         )

Original file line number	Diff line number	Diff line change
`@@ -138,6 +138,8 @@ def get_codec_class(key: str, reload_config: bool = False) -> type[Codec]:`
`138`	`138`
`139`	`139`	`config_entry = config.get("codecs", {}).get(key)`
`140`	`140`	`if config_entry is None:`
	`141`	`+ if len(codec_classes) == 1:`
	`142`	`+ return next(iter(codec_classes.values()))`
`141`	`143`	`warnings.warn(`
`142`	`144`	`f"Codec '{key}' not configured in config. Selecting any implementation.", stacklevel=2`
`143`	`145`	`)`