Run black 24.4.0 against the source.

src/_zkapauthorizer/_storage_client.py

@@ -272,7 +272,7 @@ async def stat_shares(
             )
 
         known_stats: dict[int, ShareStat] = {}
-        for (shnum, stat) in stats.items():
+        for shnum, stat in stats.items():
             if not isinstance(shnum, int) or not isinstance(stat, ShareStat):
                 raise ValueError(
                     f"expected stat_share to return list of dict of int:ShareStat, instead got item of {type(shnum)}:{type(stat)}"

src/_zkapauthorizer/_storage_server.py

@@ -560,7 +560,7 @@ def _slot_testv_and_readv_and_writev(
         # We're not exactly sure what to do with mutable container truncations
         # and the official client doesn't ever use that feature so just
         # disable it by rejecting all attempts here.
-        for (testv, writev, new_length) in tw_vectors.values():
+        for testv, writev, new_length in tw_vectors.values():
             if new_length is not None:
                 raise NewLengthRejected(new_length)
 
@@ -976,7 +976,7 @@ def add_leases_for_writev(
     Add a new lease using the given secrets to all shares written by
     ``tw_vectors``.
     """
-    for (sharenum, sharepath) in get_all_share_paths(storage_server, storage_index):
+    for sharenum, sharepath in get_all_share_paths(storage_server, storage_index):
         testv, datav, new_length = tw_vectors.get(sharenum, (None, b"", None))
         if datav or (new_length is not None):
             # It has data or a new length - it is a write.

src/_zkapauthorizer/controller.py

@@ -56,6 +56,7 @@
 
 StorageAnnouncement: TypeAlias = Optional[dict[str, Any]]
 
+
 # It would be nice to have frozen exception types but Failure.cleanFailure
 # interacts poorly with these.
 # https://twistedmatrix.com/trac/ticket/9641

src/_zkapauthorizer/lease_maintenance.py

@@ -103,7 +103,7 @@ async def visit_storage_indexes(
             # Produce consistent results by forcing some consistent ordering
             # here.  This will sort by name.
             stable_children = sorted(children.items())
-            for (name, (child_node, child_metadata)) in stable_children:
+            for name, (child_node, child_metadata) in stable_children:
                 stack.append(child_node)
 
 

src/_zkapauthorizer/model.py

@@ -80,8 +80,7 @@ class JSONAble(Protocol):
     An object which can marshal itself to JSON-compatible types.
     """
 
-    def to_json_v1(self) -> JSON:
-        ...
+    def to_json_v1(self) -> JSON: ...
 
 
 def aware_now() -> datetime:
@@ -1347,9 +1346,9 @@ def from_json_v1(cls, values: dict[str, JSON]) -> "Voucher":
         return cls(
             number=number.encode("ascii"),
             expected_tokens=expected_tokens,
-            created=None
-            if values["created"] is None
-            else parse_datetime(values["created"]),
+            created=(
+                None if values["created"] is None else parse_datetime(values["created"])
+            ),
             state=state,
         )
 

src/_zkapauthorizer/replicate.py

@@ -1069,7 +1069,7 @@ def observed_event(
         # individual argument tuple with its statement.
         events = []
         any_important = False
-        for (important, sql, manyargs) in all_changes:
+        for important, sql, manyargs in all_changes:
             any_important = any_important or important
             for args in manyargs:
                 events.append((sql, args))

src/_zkapauthorizer/sql.py

@@ -33,55 +33,43 @@ class AbstractCursor(Protocol):
     """
 
     @property
-    def lastrowid(self) -> Optional[int]:
-        ...
+    def lastrowid(self) -> Optional[int]: ...
 
     @property
-    def rowcount(self) -> Optional[int]:
-        ...
+    def rowcount(self) -> Optional[int]: ...
 
-    def execute(self, statement: str, args: "Parameters", /) -> "AbstractCursor":
-        ...
+    def execute(self, statement: str, args: "Parameters", /) -> "AbstractCursor": ...
 
     def executemany(
         self, statement: str, args: Iterable["Parameters"]
-    ) -> "AbstractCursor":
-        ...
+    ) -> "AbstractCursor": ...
 
-    def close(self) -> None:
-        ...
+    def close(self) -> None: ...
 
-    def fetchall(self) -> list[Any]:
-        ...
+    def fetchall(self) -> list[Any]: ...
 
-    def fetchmany(self, n: int) -> list[Any]:
-        ...
+    def fetchmany(self, n: int) -> list[Any]: ...
 
-    def fetchone(self) -> Any:
-        ...
+    def fetchone(self) -> Any: ...
 
 
 class AbstractConnection(Protocol):
     """
     A SQLite3 database connection.
     """
 
-    def iterdump(self) -> Iterable[str]:
-        ...
+    def iterdump(self) -> Iterable[str]: ...
 
-    def cursor(self, cursorClass: None = None) -> AbstractCursor:
-        ...
+    def cursor(self, cursorClass: None = None) -> AbstractCursor: ...
 
-    def __enter__(self) -> AbstractContextManager["AbstractConnection"]:
-        ...
+    def __enter__(self) -> AbstractContextManager["AbstractConnection"]: ...
 
     def __exit__(
         self,
         exc_type: Optional[type],
         exc_value: Optional[BaseException],
         exc_tb: Optional[Any],
-    ) -> bool:
-        ...
+    ) -> bool: ...
 
 
 Connection = AbstractConnection
@@ -155,14 +143,11 @@ class Table:
 
 class Statement(Protocol):
     @property
-    def table_name(self) -> str:
-        ...
+    def table_name(self) -> str: ...
 
-    def statement(self) -> str:
-        ...
+    def statement(self) -> str: ...
 
-    def arguments(self) -> tuple[SQLType, ...]:
-        ...
+    def arguments(self) -> tuple[SQLType, ...]: ...
 
 
 @frozen

src/_zkapauthorizer/tahoe.py

@@ -320,7 +320,7 @@ def dirnode(entry: dict[str, Any]) -> DirectoryNode:
             return DirectoryNode(readonly_directory_from_string(entry["ro_uri"]))
 
         r: _DirectoryListing = {}
-        for (name, (entry_kind, entry)) in details["children"].items():
+        for name, (entry_kind, entry) in details["children"].items():
             if entry_kind == "filenode":
                 r[name] = filenode(entry)
             else:

src/_zkapauthorizer/tests/_sql_matchers.py

@@ -44,7 +44,7 @@ def structured_dump(db: Connection) -> Iterator[Union[str, Insert]]:
     formatting.
     """
     tables = list(_structured_dump_tables(db))
-    for (name, sql) in tables:
+    for name, sql in tables:
         yield sql
         yield from _structured_dump_table(db, name)
 
@@ -134,7 +134,7 @@ def match(self, actual: Statement) -> Optional[Mismatch]:
                 return Mismatch(
                     f"length {len(actual.fields)} != {len(self.reference.fields)}",
                 )
-            for (actual_field, reference_field) in zip(
+            for actual_field, reference_field in zip(
                 actual.fields, self.reference.fields
             ):
                 matcher = _get_matcher(reference_field, actual_field)

src/_zkapauthorizer/tests/matchers.py

@@ -178,9 +178,9 @@ def leases_current(
     """
 
     def get_relevant_stats(storage_server: StorageServer) -> Iterator[ShareStat]:
-        for (storage_index, shares) in storage_server.buckets.items():
+        for storage_index, shares in storage_server.buckets.items():
             if storage_index in relevant_storage_indexes:
-                for (sharenum, stat) in shares.items():
+                for sharenum, stat in shares.items():
                     yield stat
 
     return AfterPreprocessing(  # type: ignore[no-any-return]

src/_zkapauthorizer/tests/resources.py

@@ -205,9 +205,11 @@ def addDetail(self, case: TestCase) -> None:
             f"{node_type}-create-output",
             Content(
                 UTF8_TEXT,
-                lambda: [self.create_output.encode("utf-8")]
-                if self.create_output is not None
-                else [],
+                lambda: (
+                    [self.create_output.encode("utf-8")]
+                    if self.create_output is not None
+                    else []
+                ),
             ),
         )
 
@@ -386,9 +388,9 @@ class TahoeClient(TahoeNode):
     """
 
     storage: Optional[TahoeStorage] = None
-    make_storage_announcement: Callable[
-        [TahoeStorage], JSON
-    ] = make_anonymous_storage_announcement
+    make_storage_announcement: Callable[[TahoeStorage], JSON] = (
+        make_anonymous_storage_announcement
+    )
 
     @property
     def node_type(self) -> str:

src/_zkapauthorizer/tests/storage_common.py

@@ -82,7 +82,7 @@ def write_toy_shares(
         sharenums,
         size,
     )
-    for (sharenum, writer) in allocated.items():
+    for sharenum, writer in allocated.items():
         writer.write(0, bytes_for_share(sharenum, size))
         writer.close()
 

src/_zkapauthorizer/tests/strategies.py

@@ -213,7 +213,7 @@ def tahoe_config_texts(
     def merge_shares(
         shares: tuple[int, int, int], the_rest: dict[str, object]
     ) -> dict[str, object]:
-        for (k, v) in zip(("needed", "happy", "total"), shares):
+        for k, v in zip(("needed", "happy", "total"), shares):
             if v is not None:
                 the_rest["shares." + k] = f"{v}"
         return the_rest
@@ -606,7 +606,10 @@ def set_paths(basedir: str, portnumfile: str) -> Config:
 
         return set_paths
 
-    return direct_tahoe_configs(zkapauthz_v2_configuration, shares,).map(
+    return direct_tahoe_configs(
+        zkapauthz_v2_configuration,
+        shares,
+    ).map(
         path_setter,
     )
 
@@ -615,7 +618,10 @@ def vouchers() -> SearchStrategy[bytes]:
     """
     Build byte strings in the format of vouchers.
     """
-    return binary(min_size=32, max_size=32,).map(
+    return binary(
+        min_size=32,
+        max_size=32,
+    ).map(
         urlsafe_b64encode,
     )
 
@@ -717,7 +723,10 @@ def byte_strings(label: bytes, length: int, entropy: int) -> SearchStrategy[byte
                 length,
             )
         )
-    return binary(min_size=entropy, max_size=entropy,).map(
+    return binary(
+        min_size=entropy,
+        max_size=entropy,
+    ).map(
         lambda bs: label + b"x" * (length - entropy - len(label)) + bs,
     )
 
@@ -1019,9 +1028,9 @@ def slot_test_and_write_vectors() -> SearchStrategy[TestAndWriteVectors]:
     )
 
 
-def slot_test_and_write_vectors_for_shares() -> SearchStrategy[
-    dict[int, TestAndWriteVectors]
-]:
+def slot_test_and_write_vectors_for_shares() -> (
+    SearchStrategy[dict[int, TestAndWriteVectors]]
+):
     """
     Build Tahoe-LAFS test and write vectors for a number of shares.
     """
@@ -1077,7 +1086,7 @@ def get_storage_index(self) -> bytes:
     # For testing
     def flatten(self) -> list[IFilesystemNode]:
         result = [self]
-        for (node, _) in self._children.values():
+        for node, _ in self._children.values():
             result.extend(node.flatten())
         return result
 
@@ -1120,7 +1129,10 @@ def storage_indexes_are_distinct(nodes: IFilesystemNode) -> bool:
             seen.add(si)
         return True
 
-    return recursive(leaf_nodes(), directory_nodes,).filter(
+    return recursive(
+        leaf_nodes(),
+        directory_nodes,
+    ).filter(
         storage_indexes_are_distinct,
     )
 
@@ -1443,6 +1455,10 @@ def make(
 
     stmts: SearchStrategy[Callable[[str, Table], SearchStrategy[Statement]]]
     stmts = sampled_from([inserts, deletes, updates])
-    return tuples(stmts, sql_identifiers(), tables(),).flatmap(
+    return tuples(
+        stmts,
+        sql_identifiers(),
+        tables(),
+    ).flatmap(
         make,
     )

src/_zkapauthorizer/tests/test_client_resource.py

@@ -198,6 +198,7 @@ def directory_writes() -> SearchStrategy[DirectoryWriteCapability]:
 
 TRANSIENT_ERROR = "something went wrong, who knows what"
 
+
 # Helper to work-around https://github.com/twisted/treq/issues/161
 def uncooperator(started: bool = True) -> Cooperator:
     def schedule(f: Callable[[], object]) -> DelayedCall:
@@ -1784,7 +1785,9 @@ def bad_calculate_price_requests() -> SearchStrategy[Request]:
     good_headers = just({b"content-type": [b"application/json"]})
     bad_headers = fixed_dictionaries(
         {
-            b"content-type": mime_types(blacklist={"application/json"},).map(
+            b"content-type": mime_types(
+                blacklist={"application/json"},
+            ).map(
                 lambda content_type: [content_type.encode("utf-8")],
             ),
         }

src/_zkapauthorizer/tests/test_lease_maintenance.py

@@ -528,7 +528,7 @@ def test_renewed(
         # Make sure that the storage brokers have shares at the storage
         # indexes we're going to operate on.
         for storage_server in storage_broker.get_connected_servers():
-            for (storage_index, shares) in buckets:
+            for storage_index, shares in buckets:
                 for sharenum, expiration_time in shares.items():
                     try:
                         create_share(

src/_zkapauthorizer/tests/test_model.py

@@ -882,12 +882,12 @@ def test_lease_maintenance_activity(
         ).store
 
         expected = None
-        for (start_delay, sizes, finish_delay) in activity:
+        for start_delay, sizes, finish_delay in activity:
             now += start_delay
             started = now
             x = store.start_lease_maintenance()
             passes_required = 0
-            for (num_passes, trim_size) in sizes:
+            for num_passes, trim_size in sizes:
                 passes_required += num_passes
                 trim_size %= store.pass_value
                 x.observe(

src/_zkapauthorizer/tests/test_storage_protocol.py

@@ -384,7 +384,7 @@ def test_create_immutable(
             Equals(sharenums),
             "server did not return all buckets we wrote",
         )
-        for (sharenum, bucket) in readers.items():
+        for sharenum, bucket in readers.items():
             self.expectThat(
                 bucket.remote_read(0, size),
                 Equals(bytes_for_share(sharenum, size)),
@@ -435,6 +435,7 @@ def test_shares_already_exist(
         When the remote *allocate_buckets* implementation reports that shares
         already exist, passes are not spent for those shares.
         """
+
         # A helper that only varies on sharenums.
         async def allocate_buckets(sharenums: set[int]) -> None:
             alreadygot, writers = await self.client.allocate_buckets(
@@ -1292,7 +1293,7 @@ def assert_read_back_data(
     for sharenum, vectors in test_and_write_vectors_for_shares.items():
         length = max(offset + len(data) for (offset, data) in vectors.write_vector)
         expected = b"\x00" * length
-        for (offset, data) in vectors.write_vector:
+        for offset, data in vectors.write_vector:
             expected = expected[:offset] + data + expected[offset + len(data) :]
         if vectors.new_length is not None and vectors.new_length < length:
             expected = expected[: vectors.new_length]