Format Python code with psf/black push (#87)

There appear to be some python formatting errors in
658bb6d. This pull request
uses the [psf/black](https://github.com/psf/black) formatter to fix
these issues.

dacapo/store/local_weights_store.py

@@ -103,7 +103,9 @@ def store_best(self, run: str, iteration: int, dataset: str, criterion: str):
     def retrieve_best(self, run: str, dataset: str, criterion: str) -> int:
         logger.info("Retrieving weights for run %s, criterion %s", run, criterion)
 
-        with (self.__get_weights_dir(run) / criterion / f"{dataset}.json").open("r") as fd:
+        with (self.__get_weights_dir(run) / criterion / f"{dataset}.json").open(
+            "r"
+        ) as fd:
             weights_info = json.load(fd)
 
         return weights_info["iteration"]