diff --git a/examples/dynamic_progress.py b/examples/dynamic_progress.py
index 8001f29a..0656eb65 100644
--- a/examples/dynamic_progress.py
+++ b/examples/dynamic_progress.py
@@ -10,7 +10,13 @@ import time
 
 from rich.console import RenderGroup
 from rich.live import Live
-from rich.progress import BarColumn, Progress, SpinnerColumn, TextColumn, TimeElapsedColumn
+from rich.progress import (
+    BarColumn,
+    Progress,
+    SpinnerColumn,
+    TextColumn,
+    TimeElapsedColumn,
+)
 
 
 def run_steps(name, step_times, app_steps_task_id):
@@ -50,23 +56,20 @@ step_progress = Progress(
 )
 # progress bar for current app (progress in steps)
 app_steps_progress = Progress(
-    TextColumn("[bold blue]Progress for app {task.fields[name]}: {task.percentage:.0f}%"),
+    TextColumn(
+        "[bold blue]Progress for app {task.fields[name]}: {task.percentage:.0f}%"
+    ),
     BarColumn(),
     TextColumn("({task.completed} of {task.total} steps done)"),
 )
 # overall progress bar
 overall_progress = Progress(
-    TimeElapsedColumn(),
-    BarColumn(),
-    TextColumn("{task.description}")
+    TimeElapsedColumn(), BarColumn(), TextColumn("{task.description}")
 )
 # group of progress bars;
 # some are always visible, others will disappear when progress is complete
 group = RenderGroup(
-    current_app_progress,
-    step_progress,
-    app_steps_progress,
-    overall_progress
+    current_app_progress, step_progress, app_steps_progress, overall_progress
 )
 
 # tuple specifies how long each step takes for that app
@@ -92,16 +95,22 @@ with Live(group):
 
         # add progress bar for steps of this app, and run the steps
         current_task_id = current_app_progress.add_task("Installing app %s" % name)
-        app_steps_task_id = app_steps_progress.add_task("", total=len(step_times), name=name)
+        app_steps_task_id = app_steps_progress.add_task(
+            "", total=len(step_times), name=name
+        )
         run_steps(name, step_times, app_steps_task_id)
 
         # stop and hide steps progress bar for this specific app
         app_steps_progress.update(app_steps_task_id, visible=False)
         current_app_progress.stop_task(current_task_id)
-        current_app_progress.update(current_task_id, description="[bold green]App %s installed!" % name)
+        current_app_progress.update(
+            current_task_id, description="[bold green]App %s installed!" % name
+        )
 
         # increase overall progress now this task is done
         overall_progress.update(overall_task_id, advance=1)
 
     # final update for message on overall progress bar
-    overall_progress.update(overall_task_id, description="[bold green]%s apps installed, done!" % len(apps))
+    overall_progress.update(
+        overall_task_id, description="[bold green]%s apps installed, done!" % len(apps)
+    )