Update app.py

app.py

@@ -48,6 +48,7 @@ import cv2
 import numpy as np
 import pytesseract
 import line_cor
+import altair as alt
 #pytesseract.pytesseract.tesseract_cmd = r"./Tesseract-OCR/tesseract.exe"
 from PIL import Image
 @st.experimental_singleton