app.py

from diffusers import StableDiffusionPipeline
from PIL import Image
import streamlit as st
import torch
from transformers import CLIPTextModel, CLIPFeatureExtractor
import numpy as np
import matplotlib.pyplot as plt

# Load the model and tokenizer
@st.cache(allow_output_mutation=True)
def load_model():
    model_id = "CompVis/stable-diffusion-2-1"
    pipe = StableDiffusionPipeline.from_pretrained(model_id, torch_dtype=torch.float16)
    pipe.to("cuda" if torch.cuda.is_available() else "cpu")
    return pipe

# Main function
def main():
    st.title("Stable Diffusion 2.1 Image Generator")
    st.header("Generate images from your prompts!")
    
    prompt = st.text_input("Enter your prompt:", "")
    steps = st.slider("Number of steps:", min_value=20, max_value=200, value=50)
    guidance = st.slider("Guidance scale:", min_value=1.0, max_value=20.0, value=7.5)
    
    if st.button("Generate"):
        if not prompt:
            st.error("Please enter a prompt")
            return
        
        with st.spinner("Generating image..."):
            pipe = load_model()
            image = pipe(prompt, guidance_scale=guidance, num_inference_steps=steps).images[0]
            st.image(image, caption="Generated Image")

if __name__ == "__main__":
    main()