Update app.py

app.py

@@ -10,7 +10,7 @@ from shapely.geometry.polygon import Polygon
 from shapely.affinity import scale
 from PIL import Image, ImageDraw, ImageOps, ImageFilter, ImageFont, ImageColor
 
-os.system('pip install gradio==2.7.5')
+os.system('pip3 install gradio==2.7.5')
 import gradio as gr
 
 from transformers import AutoTokenizer, AutoConfig, AutoModelForCausalLM