Update restapi.py (ultralytics#7309)

* Update restapi.py

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* Update restapi.py

* Update restapi.py

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* Update restapi.py

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

utils/flask_rest_api/restapi.py

@@ -21,12 +21,16 @@ def predict():
         return
 
     if request.files.get("image"):
-        image_file = request.files["image"]
-        image_bytes = image_file.read()
+        # Method 1
+        # with request.files["image"] as f:
+        #     im = Image.open(io.BytesIO(f.read()))
 
-        img = Image.open(io.BytesIO(image_bytes))
+        # Method 2
+        im_file = request.files["image"]
+        im_bytes = im_file.read()
+        im = Image.open(io.BytesIO(im_bytes))
 
-        results = model(img, size=640)  # reduce size=320 for faster inference
+        results = model(im, size=640)  # reduce size=320 for faster inference
         return results.pandas().xyxy[0].to_json(orient="records")