Enable ruff/flake8-implicit-str-concat rules (ISC) and fix issues (#1868)

* Enable ruff/flake8-implicit-str-concat rules (ISC)

* Apply ruff/flake8-implicit-str-concat rule ISC001

ISC001 Implicitly concatenated string literals on one line

* A round of formatting after linting

* Aplly ruff/flake8-implicit-str-concat rule ISC003

ISC003 Explicitly concatenated string should be implicitly concatenated

---------

Co-authored-by: Joe Hamman <joe@earthmover.io>

Author: DimitriPapadopoulos

pyproject.toml

@@ -169,6 +169,7 @@ extend-exclude = [
 extend-select = [
     "B",  # flake8-bugbear
     "I",  # isort
+    "ISC",
     "UP",  # pyupgrade
     "RSE",
     "RUF",

src/zarr/codecs/crc32c_.py

@@ -42,8 +42,7 @@ async def decode_single(
         stored_checksum = bytes(crc32_bytes)
         if computed_checksum != stored_checksum:
             raise ValueError(
-                "Stored and computed checksum do not match. "
-                + f"Stored: {stored_checksum!r}. Computed: {computed_checksum!r}."
+                f"Stored and computed checksum do not match. Stored: {stored_checksum!r}. Computed: {computed_checksum!r}."
             )
         return Buffer.from_array_like(inner_bytes)
 

src/zarr/codecs/pipeline.py

@@ -104,31 +104,26 @@ def codecs_from_list(
             if prev_codec is not None:
                 if isinstance(codec, ArrayBytesCodec) and isinstance(prev_codec, ArrayBytesCodec):
                     raise ValueError(
-                        f"ArrayBytesCodec '{type(codec)}' cannot follow after "
-                        + f"ArrayBytesCodec '{type(prev_codec)}' because exactly "
-                        + "1 ArrayBytesCodec is allowed."
+                        f"ArrayBytesCodec '{type(codec)}' cannot follow after ArrayBytesCodec '{type(prev_codec)}' because exactly 1 ArrayBytesCodec is allowed."
                     )
                 if isinstance(codec, ArrayBytesCodec) and isinstance(prev_codec, BytesBytesCodec):
                     raise ValueError(
-                        f"ArrayBytesCodec '{type(codec)}' cannot follow after "
-                        + f"BytesBytesCodec '{type(prev_codec)}'."
+                        f"ArrayBytesCodec '{type(codec)}' cannot follow after BytesBytesCodec '{type(prev_codec)}'."
                     )
                 if isinstance(codec, ArrayArrayCodec) and isinstance(prev_codec, ArrayBytesCodec):
                     raise ValueError(
-                        f"ArrayArrayCodec '{type(codec)}' cannot follow after "
-                        + f"ArrayBytesCodec '{type(prev_codec)}'."
+                        f"ArrayArrayCodec '{type(codec)}' cannot follow after ArrayBytesCodec '{type(prev_codec)}'."
                     )
                 if isinstance(codec, ArrayArrayCodec) and isinstance(prev_codec, BytesBytesCodec):
                     raise ValueError(
-                        f"ArrayArrayCodec '{type(codec)}' cannot follow after "
-                        + f"BytesBytesCodec '{type(prev_codec)}'."
+                        f"ArrayArrayCodec '{type(codec)}' cannot follow after BytesBytesCodec '{type(prev_codec)}'."
                     )
             prev_codec = codec
 
         if any(isinstance(codec, ShardingCodec) for codec in codecs) and len(codecs) > 1:
             warn(
                 "Combining a `sharding_indexed` codec disables partial reads and "
-                + "writes, which may lead to inefficient performance.",
+                "writes, which may lead to inefficient performance.",
                 stacklevel=3,
             )
 

src/zarr/codecs/sharding.py

@@ -361,8 +361,7 @@ def evolve(self, array_spec: ArraySpec) -> Self:
     def validate(self, array_metadata: ArrayMetadata) -> None:
         if len(self.chunk_shape) != array_metadata.ndim:
             raise ValueError(
-                "The shard's `chunk_shape` and array's `shape` need to have the "
-                + "same number of dimensions."
+                "The shard's `chunk_shape` and array's `shape` need to have the same number of dimensions."
             )
         if not isinstance(array_metadata.chunk_grid, RegularChunkGrid):
             raise ValueError("Sharding is only compatible with regular chunk grids.")
@@ -375,8 +374,7 @@ def validate(self, array_metadata: ArrayMetadata) -> None:
             )
         ):
             raise ValueError(
-                "The array's `chunk_shape` needs to be divisible by the "
-                + "shard's inner `chunk_shape`."
+                "The array's `chunk_shape` needs to be divisible by the shard's inner `chunk_shape`."
             )
 
     async def decode_single(

src/zarr/codecs/transpose.py

@@ -45,17 +45,15 @@ def to_dict(self) -> dict[str, JSON]:
     def evolve(self, array_spec: ArraySpec) -> Self:
         if len(self.order) != array_spec.ndim:
             raise ValueError(
-                "The `order` tuple needs have as many entries as "
-                + f"there are dimensions in the array. Got {self.order}."
+                f"The `order` tuple needs have as many entries as there are dimensions in the array. Got {self.order}."
             )
         if len(self.order) != len(set(self.order)):
             raise ValueError(
                 f"There must not be duplicates in the `order` tuple. Got {self.order}."
             )
         if not all(0 <= x < array_spec.ndim for x in self.order):
             raise ValueError(
-                "All entries in the `order` tuple must be between 0 and "
-                + f"the number of dimensions in the array. Got {self.order}."
+                f"All entries in the `order` tuple must be between 0 and the number of dimensions in the array. Got {self.order}."
             )
         order = tuple(self.order)
 

src/zarr/store/remote.py

@@ -25,10 +25,9 @@ def __init__(self, url: UPath | str, **storage_options: dict[str, Any]):
         if isinstance(url, str):
             self.root = UPath(url, **storage_options)
         else:
-            assert len(storage_options) == 0, (
-                "If constructed with a UPath object, no additional "
-                + "storage_options are allowed."
-            )
+            assert (
+                len(storage_options) == 0
+            ), "If constructed with a UPath object, no additional storage_options are allowed."
             self.root = url.rstrip("/")
         # test instantiate file system
         fs, _ = fsspec.core.url_to_fs(str(self.root), asynchronous=True, **self.root._kwargs)

src/zarr/v2/convenience.py

@@ -470,7 +470,7 @@ def __init__(self, log):
             self.log_file = log
         else:
             raise TypeError(
-                "log must be a callable function, file path or " "file-like object, found %r" % log
+                "log must be a callable function, file path or file-like object, found %r" % log
             )
 
     def __enter__(self):
@@ -898,7 +898,7 @@ def _copy(log, source, dest, name, root, shallow, without_attrs, if_exists, dry_
         if exists:
             if if_exists == "raise":
                 raise CopyError(
-                    "an object {!r} already exists in destination " "{!r}".format(name, dest.name)
+                    "an object {!r} already exists in destination {!r}".format(name, dest.name)
                 )
             elif if_exists == "skip":
                 do_copy = False
@@ -990,7 +990,7 @@ def _copy(log, source, dest, name, root, shallow, without_attrs, if_exists, dry_
         if exists_array:
             if if_exists == "raise":
                 raise CopyError(
-                    "an array {!r} already exists in destination " "{!r}".format(name, dest.name)
+                    "an array {!r} already exists in destination {!r}".format(name, dest.name)
                 )
             elif if_exists == "skip":
                 do_copy = False

src/zarr/v2/indexing.py

@@ -363,14 +363,12 @@ class BoolArrayDimIndexer:
     def __init__(self, dim_sel, dim_len, dim_chunk_len):
         # check number of dimensions
         if not is_bool_array(dim_sel, 1):
-            raise IndexError(
-                "Boolean arrays in an orthogonal selection must " "be 1-dimensional only"
-            )
+            raise IndexError("Boolean arrays in an orthogonal selection must be 1-dimensional only")
 
         # check shape
         if dim_sel.shape[0] != dim_len:
             raise IndexError(
-                "Boolean array has the wrong length for dimension; " "expected {}, got {}".format(
+                "Boolean array has the wrong length for dimension; expected {}, got {}".format(
                     dim_len, dim_sel.shape[0]
                 )
             )
@@ -464,9 +462,7 @@ def __init__(
         # ensure 1d array
         dim_sel = np.asanyarray(dim_sel)
         if not is_integer_array(dim_sel, 1):
-            raise IndexError(
-                "integer arrays in an orthogonal selection must be " "1-dimensional only"
-            )
+            raise IndexError("integer arrays in an orthogonal selection must be 1-dimensional only")
 
         # handle wraparound
         if wraparound:
@@ -920,9 +916,7 @@ def check_fields(fields, dtype):
     # check type
     if not isinstance(fields, (str, list, tuple)):
         raise IndexError(
-            "'fields' argument must be a string or list of strings; found " "{!r}".format(
-                type(fields)
-            )
+            "'fields' argument must be a string or list of strings; found {!r}".format(type(fields))
         )
     if fields:
         if dtype.names is None:

src/zarr/v2/util.py

@@ -307,7 +307,7 @@ def normalize_fill_value(fill_value, dtype: np.dtype[Any]):
 
         if not isinstance(fill_value, str):
             raise ValueError(
-                "fill_value {!r} is not valid for dtype {}; must be a " "unicode string".format(
+                "fill_value {!r} is not valid for dtype {}; must be a unicode string".format(
                     fill_value, dtype
                 )
             )
@@ -323,7 +323,7 @@ def normalize_fill_value(fill_value, dtype: np.dtype[Any]):
         except Exception as e:
             # re-raise with our own error message to be helpful
             raise ValueError(
-                "fill_value {!r} is not valid for dtype {}; nested " "exception: {}".format(
+                "fill_value {!r} is not valid for dtype {}; nested exception: {}".format(
                     fill_value, dtype, e
                 )
             )