style: reformat per black

app/streamlit/backend.py

@@ -3,15 +3,14 @@ from io import BytesIO
 import base64
 from PIL import Image
 
+
 class ServiceError(Exception):
     def __init__(self, status_code):
         self.status_code = status_code
 
+
 def get_images_from_backend(prompt, backend_url):
-    r = requests.post(
-        backend_url, 
-        json={"prompt": prompt}
-    )
+    r = requests.post(backend_url, json={"prompt": prompt})
     if r.status_code == 200:
         images = r.json()["images"]
         images = [Image.open(BytesIO(base64.b64decode(img))) for img in images]

setup.py

@@ -1,4 +1,4 @@
 from setuptools import setup
 
 if __name__ == "__main__":
-    setup()
+    setup()