Manually apply ruff/pyupgrade rule UP030

UP030 Use implicit references for positional format fields

Author: DimitriPapadopoulos

src/zarr/core/indexing.py

@@ -68,7 +68,7 @@ class VindexInvalidSelectionError(IndexError):
     _msg = (
         "unsupported selection type for vectorized indexing; only "
         "coordinate selection (tuple of integer arrays) and mask selection "
-        "(single Boolean array) are supported; got {0!r}"
+        "(single Boolean array) are supported; got {!r}"
     )
 
 

src/zarr/errors.py

@@ -9,17 +9,17 @@ def __init__(self, *args: Any) -> None:
 
 
 class ContainsGroupError(_BaseZarrError):
-    _msg = "A group exists in store {0!r} at path {1!r}."
+    _msg = "A group exists in store {!r} at path {!r}."
 
 
 class ContainsArrayError(_BaseZarrError):
-    _msg = "An array exists in store {0!r} at path {1!r}."
+    _msg = "An array exists in store {!r} at path {!r}."
 
 
 class ContainsArrayAndGroupError(_BaseZarrError):
     _msg = (
         "Array and group metadata documents (.zarray and .zgroup) were both found in store "
-        "{0!r} at path {1!r}."
+        "{!r} at path {!r}. "
         "Only one of these files may be present in a given directory / prefix. "
         "Remove the .zarray file, or the .zgroup file, or both."
     )