app.py

from fastai.vision.all import *
from io import BytesIO
import requests
import streamlit as st

"""
# Flowers of different colors
# 不同顏色的花
可以辨識 藍 橘 紅 白 黃色的花.
'Blue', 'Orange', 'Red', 'White', 'Yellow'


![image/png](https://cdn-uploads.huggingface.co/production/uploads/6528b87518327980bf9c4be5/v3iQiw6JdZthJY-0FCue6.png)

"""

def predict(img):
    st.image(img, caption="Your image", use_column_width=True)
    pred, key, probs = learn_inf.predict(img)
    # st.write(learn_inf.predict(img))

    f"""
    ## Rediction result: {pred}
    ### Probability of {pred}: {probs[key].item()*100: .2f}%
    """


path = "./"
learn_inf = load_learner(path + "demo_stage-2.pkl")

option = st.radio("", ["Upload Image", "Image URL"])

if option == "Upload Image":
    uploaded_file = st.file_uploader("Please upload an image.")

    if uploaded_file is not None:
        img = PILImage.create(uploaded_file)
        predict(img)

else:
    url = st.text_input("Please input a url.")

    if url != "":
        try:
            response = requests.get(url)
            pil_img = PILImage.create(BytesIO(response.content))
            predict(pil_img)

        except:
            st.text("Problem reading image from", url)