diff --git a/src/lean_dojo/constants.py b/src/lean_dojo/constants.py
index 838e8571..e4cef1bd 100644
--- a/src/lean_dojo/constants.py
+++ b/src/lean_dojo/constants.py
@@ -1,6 +1,7 @@
 """Constants controlling LeanDojo's behaviors. 
 Many of them are configurable via :ref:`environment-variables`.
 """
+
 import os
 import re
 import sys
diff --git a/src/lean_dojo/container.py b/src/lean_dojo/container.py
index d3d7c7b7..9853b0d5 100644
--- a/src/lean_dojo/container.py
+++ b/src/lean_dojo/container.py
@@ -2,6 +2,7 @@
 Currently, LeanDojo supports two types of containers: ``docker`` and ``native``. 
 The former is the default and recommended option, while the latter is experimental.
 """
+
 import os
 import shlex
 import signal
diff --git a/src/lean_dojo/data_extraction/ast/lean4/node.py b/src/lean_dojo/data_extraction/ast/lean4/node.py
index 45b8c40a..61a9261d 100644
--- a/src/lean_dojo/data_extraction/ast/lean4/node.py
+++ b/src/lean_dojo/data_extraction/ast/lean4/node.py
@@ -361,9 +361,9 @@ def from_data(cls, node_data: Dict[str, Any], lean_file: LeanFile) -> "GroupNode
 class MathlibTacticLemmaNode4(Node4):
     name: str
     full_name: Optional[str] = None
-    _is_private_decl: Optional[
-        bool
-    ] = False  # `_is_private` doesn't play well with lxml.
+    _is_private_decl: Optional[bool] = (
+        False  # `_is_private` doesn't play well with lxml.
+    )
 
     @classmethod
     def from_data(
@@ -1027,9 +1027,9 @@ def from_data(
 class CommandTheoremNode4(Node4):
     name: str
     full_name: Optional[str] = None
-    _is_private_decl: Optional[
-        bool
-    ] = False  # `_is_private` doesn't play well with lxml.
+    _is_private_decl: Optional[bool] = (
+        False  # `_is_private` doesn't play well with lxml.
+    )
 
     @classmethod
     def from_data(
diff --git a/src/lean_dojo/data_extraction/build_lean3_repo.py b/src/lean_dojo/data_extraction/build_lean3_repo.py
index 2bc1b127..d687ff47 100644
--- a/src/lean_dojo/data_extraction/build_lean3_repo.py
+++ b/src/lean_dojo/data_extraction/build_lean3_repo.py
@@ -2,6 +2,7 @@
 
 Only this file runs in Docker. So it must be self-contained.
 """
+
 import os
 import sys
 import toml
diff --git a/src/lean_dojo/data_extraction/build_lean4_repo.py b/src/lean_dojo/data_extraction/build_lean4_repo.py
index b0468cf4..6593c56c 100644
--- a/src/lean_dojo/data_extraction/build_lean4_repo.py
+++ b/src/lean_dojo/data_extraction/build_lean4_repo.py
@@ -2,6 +2,7 @@
 
 Only this file runs in Docker. So it must be self-contained.
 """
+
 import os
 import re
 import shutil
diff --git a/src/lean_dojo/data_extraction/cache.py b/src/lean_dojo/data_extraction/cache.py
index 52afb761..71375391 100644
--- a/src/lean_dojo/data_extraction/cache.py
+++ b/src/lean_dojo/data_extraction/cache.py
@@ -1,5 +1,6 @@
 """Cache manager of traced repos.
 """
+
 import os
 import shutil
 import tarfile
diff --git a/src/lean_dojo/data_extraction/lean.py b/src/lean_dojo/data_extraction/lean.py
index 258a8dee..4af5325b 100644
--- a/src/lean_dojo/data_extraction/lean.py
+++ b/src/lean_dojo/data_extraction/lean.py
@@ -1,6 +1,7 @@
 """This module define classes for repos, files, and theorems in Lean. 
 Objects of these classes contain only surface information, without extracting any trace.
 """
+
 import re
 import os
 import json
diff --git a/src/lean_dojo/data_extraction/trace.py b/src/lean_dojo/data_extraction/trace.py
index fb9f1327..367ba72e 100644
--- a/src/lean_dojo/data_extraction/trace.py
+++ b/src/lean_dojo/data_extraction/trace.py
@@ -2,6 +2,7 @@
 To estimate the time for tracing a repo, a good rule of thumb is 1.5x the time for compiling the repo using :code:`leanpkg build`.
 A repo has to be traced only once, and the traced repo will be stored in a cache for fast access in the future.
 """
+
 import shutil
 from pathlib import Path
 from loguru import logger
diff --git a/src/lean_dojo/data_extraction/traced_data.py b/src/lean_dojo/data_extraction/traced_data.py
index 8ad9f07c..ec42a9a6 100644
--- a/src/lean_dojo/data_extraction/traced_data.py
+++ b/src/lean_dojo/data_extraction/traced_data.py
@@ -1,5 +1,6 @@
 """This module defines traced repos/files/theorems.
 """
+
 import re
 import os
 import ray
diff --git a/src/lean_dojo/interaction/parse_goals.py b/src/lean_dojo/interaction/parse_goals.py
index 42bede04..64727315 100644
--- a/src/lean_dojo/interaction/parse_goals.py
+++ b/src/lean_dojo/interaction/parse_goals.py
@@ -1,5 +1,6 @@
 """Utilities for parsing Lean's pretty-printed proof goals.
 """
+
 import re
 from typing import List
 from dataclasses import dataclass
diff --git a/src/lean_dojo/utils.py b/src/lean_dojo/utils.py
index 0f792e60..08917615 100644
--- a/src/lean_dojo/utils.py
+++ b/src/lean_dojo/utils.py
@@ -1,5 +1,6 @@
 """Utility functions used internally by LeanDojo.
 """
+
 import re
 import os
 import ray