update docstrings to reference zarr.codecs.numcodecs

Author: K-Meech

src/zarr/metadata/migrate_v3.py

@@ -252,7 +252,7 @@ def _convert_compressor(
             return GzipCodec(level=compressor.level)
 
         case _:
-            # If possible, find matching numcodecs.zarr3 codec
+            # If possible, find matching zarr.codecs.numcodecs codec
             compressor_codec = _find_numcodecs_zarr3(compressor)
 
             if not isinstance(compressor_codec, BytesBytesCodec):
@@ -262,7 +262,7 @@ def _convert_compressor(
 
 
 def _find_numcodecs_zarr3(numcodecs_codec: numcodecs.abc.Codec) -> Codec:
-    """Find matching numcodecs.zarr3 codec (if it exists)"""
+    """Find matching zarr.codecs.numcodecs codec (if it exists)"""
 
     numcodec_name = f"numcodecs.{numcodecs_codec.codec_id}"
     numcodec_dict = {
@@ -274,7 +274,7 @@ def _find_numcodecs_zarr3(numcodecs_codec: numcodecs.abc.Codec) -> Codec:
         codec_v3 = get_codec_class(numcodec_name)
     except KeyError as exc:
         raise ValueError(
-            f"Couldn't find corresponding numcodecs.zarr3 codec for {numcodecs_codec.codec_id}"
+            f"Couldn't find corresponding zarr.codecs.numcodecs codec for {numcodecs_codec.codec_id}"
         ) from exc
 
     return codec_v3.from_dict(numcodec_dict)

tests/test_cli/test_migrate_v3.py

@@ -13,7 +13,7 @@
 from zarr.codecs.blosc import BloscCodec
 from zarr.codecs.bytes import BytesCodec
 from zarr.codecs.gzip import GzipCodec
-from zarr.codecs.numcodecs._codecs import LZMA, Delta
+from zarr.codecs.numcodecs import LZMA, Delta
 from zarr.codecs.transpose import TransposeCodec
 from zarr.codecs.zstd import ZstdCodec
 from zarr.core.array import Array
@@ -506,7 +506,8 @@ def test_migrate_unknown_codec(local_store: LocalStore) -> None:
     assert result.exit_code == 1
     assert isinstance(result.exception, ValueError)
     assert (
-        str(result.exception) == "Couldn't find corresponding numcodecs.zarr3 codec for categorize"
+        str(result.exception)
+        == "Couldn't find corresponding zarr.codecs.numcodecs codec for categorize"
     )