diff --git a/paper/src/context_threads.py b/paper/src/context_threads.py
index 0d6fd53..93a635d 100644
--- a/paper/src/context_threads.py
+++ b/paper/src/context_threads.py
@@ -210,7 +210,7 @@ def range_of_dates(start_date, extra_days):
     # write contests to ndjson
     with open(
         os.path.join(
-            f"tweet_threads_{datetime.datetime.strptime(args.start_date, '%Y-%m-%d').date() }_{datetime.datetime.strptime(args.start_date, '%Y-%m-%d').date() + datetime.timedelta(days=args.extra_days-1)}.ndjson",
+            f"tweet_threads_{datetime.datetime.strptime(args.start_date, '%Y-%m-%d').date()}_{datetime.datetime.strptime(args.start_date, '%Y-%m-%d').date() + datetime.timedelta(days=args.extra_days-1)}.ndjson",
         ),
         "w",
     ) as f:
diff --git a/src/conspiracies/docprocessing/relationextraction/gptprompting/prompt_apis.py b/src/conspiracies/docprocessing/relationextraction/gptprompting/prompt_apis.py
index 8f0e7fb..6144353 100644
--- a/src/conspiracies/docprocessing/relationextraction/gptprompting/prompt_apis.py
+++ b/src/conspiracies/docprocessing/relationextraction/gptprompting/prompt_apis.py
@@ -4,7 +4,9 @@
 
 from spacy.tokens import Doc
 
-from conspiracies.docprocessing.relationextraction.gptprompting.prompt_templates import PromptTemplate
+from conspiracies.docprocessing.relationextraction.gptprompting.prompt_templates import (
+    PromptTemplate,
+)
 from conspiracies.registry import registry
 
 
diff --git a/src/conspiracies/preprocessing/create_context_threads.py b/src/conspiracies/preprocessing/create_context_threads.py
index 2301d9e..e7a0acf 100644
--- a/src/conspiracies/preprocessing/create_context_threads.py
+++ b/src/conspiracies/preprocessing/create_context_threads.py
@@ -135,7 +135,7 @@ def range_of_dates(start_date, extra_days):
     # write contests to ndjson; the ndjson of contexts has the format: List[Dict[str, Any]]
     with open(
         os.path.join(
-            f"tweet_threads_{datetime.datetime.strptime(args.start_date, '%Y-%m-%d').date() }_{datetime.datetime.strptime(args.start_date, '%Y-%m-%d').date() + datetime.timedelta(days=args.extra_days-1)}.ndjson",
+            f"tweet_threads_{datetime.datetime.strptime(args.start_date, '%Y-%m-%d').date()}_{datetime.datetime.strptime(args.start_date, '%Y-%m-%d').date() + datetime.timedelta(days=args.extra_days-1)}.ndjson",
         ),
         "w",
     ) as f: