app.py

import streamlit as st
import qrcode
from io import BytesIO
from PIL import Image

def generate_qr_code(data):
    qr = qrcode.QRCode(
        version=1,
        error_correction=qrcode.constants.ERROR_CORRECT_L,
        box_size=10,
        border=4,
    )
    qr.add_data(data)
    qr.make(fit=True)

    img = qr.make_image(fill="black", back_color="white")
    return img

st.title("QR Code Generator")

# User input for QR code
user_input = st.text_input("Enter text or URL:")

if st.button("Generate QR Code"):
    if user_input:
        qr_img = generate_qr_code(user_input)
        
        # Convert PIL Image to Bytes
        buffer = BytesIO()
        qr_img.save(buffer, format="PNG")
        buffer.seek(0)
        img_bytes = buffer.getvalue()  # Convert to bytes

        st.image(img_bytes, caption="Your QR Code", use_container_width=True)  # Corrected input
        st.download_button(
            label="Download QR Code",
            data=buffer,
            file_name="qr_code.png",
            mime="image/png"
        )
    else:
        st.warning("Please enter text or a URL to generate a QR code.")