diff --git a/examples-proposed/004-time-loop/mymodule/components.py b/examples-proposed/004-time-loop/mymodule/components.py
index 00aaa66..418c12e 100644
--- a/examples-proposed/004-time-loop/mymodule/components.py
+++ b/examples-proposed/004-time-loop/mymodule/components.py
@@ -37,8 +37,8 @@ def step(self, timestamp=0.0):
         NOTEBOOK_NAME = 'full_state.ipynb'
         jupyter_state_files = self.services.get_staged_jupyterhub_files()
         self.services.stage_jupyter_notebook(
-            dest_notebook_name=NOTEBOOK_NAME, # path is relative to JupyterHub directory
-            source_notebook_path='base-notebook.ipynb', # path is relative to input directory
+            dest_notebook_name=NOTEBOOK_NAME,  # path is relative to JupyterHub directory
+            source_notebook_path='base-notebook.ipynb',  # path is relative to input directory
             tags=jupyter_state_files,
         )
         self.services.portal_register_jupyter_notebook(NOTEBOOK_NAME)
diff --git a/ipsframework/jupyter.py b/ipsframework/jupyter.py
index 711fa23..bfea3ed 100644
--- a/ipsframework/jupyter.py
+++ b/ipsframework/jupyter.py
@@ -26,17 +26,19 @@ def _get_state_file_notebook_code_cell(variable: str, tags: List[str]):
 {variable} = [{itemsep.join([f"'data{sep}{file}'" for file in tags])}]
 """
 
+
 def stage_jupyter_notebook(dest: str, src: str, tags: List[str], variable_name: str, index: int):
     """"""
     # to avoid conversion, use as_version=nbf.NO_CONVERT
-    # 
+    #
     nb: nbf.NotebookNode = nbf.read(src, as_version=4)
 
     header = '# Next cell generated by IPS Framework'
-    nb['cells'] = nb['cells'][:index] + [
-        nbf.v4.new_markdown_cell(header), 
-        nbf.v4.new_code_cell(_get_state_file_notebook_code_cell(variable_name, tags))
-    ] + nb['cells'][index:]
+    nb['cells'] = (
+        nb['cells'][:index]
+        + [nbf.v4.new_markdown_cell(header), nbf.v4.new_code_cell(_get_state_file_notebook_code_cell(variable_name, tags))]
+        + nb['cells'][index:]
+    )
 
     nbf.validate(nb)
     with open(dest, 'w') as f:
diff --git a/ipsframework/services.py b/ipsframework/services.py
index df7c012..a1f0147 100644
--- a/ipsframework/services.py
+++ b/ipsframework/services.py
@@ -1885,17 +1885,18 @@ def _get_jupyterhub_url(self) -> Optional[str]:
         url += f'ipsframework/runs/{runid}/'
         return url
 
-    def stage_jupyter_notebook(self, 
-                                        dest_notebook_name: str,
-                                        source_notebook_path: str,
-                                        tags: List[str],
-                                        variable_name: str = 'FILES',
-                                        cell_to_modify: int = 0,
-                                    ) -> None:
+    def stage_jupyter_notebook(
+        self,
+        dest_notebook_name: str,
+        source_notebook_path: str,
+        tags: List[str],
+        variable_name: str = 'FILES',
+        cell_to_modify: int = 0,
+    ) -> None:
         """Loads a notebook from source_notebook_path, adds a cell to load the data, and then saves it to source_notebook_path.
 
         Does not modify the source notebook.
-        
+
         Params:
           - dest_notebook_name: name of the JupyterNotebook you want to write (do not include file paths).
           - source_notebook_path: location you want to load the source notebook from
@@ -1908,7 +1909,7 @@ def stage_jupyter_notebook(self,
         if not self._jupyterhub_dir:
             if not self._init_jupyter():
                 raise Exception('Unable to initialize base JupyterHub dir')
-        
+
         stage_jupyter_notebook(f'{self._jupyterhub_dir}{dest_notebook_name}', source_notebook_path, tags, variable_name, cell_to_modify)
 
     def portal_register_jupyter_notebook(self, notebook_name: str) -> None: