custom_nodes/ComfyUI-to-Python-Extension/README.md

ComfyUI-to-Python-Extension

The ComfyUI-to-Python-Extension is a powerful tool that translates ComfyUI workflows into executable Python code. Designed to bridge the gap between ComfyUI's visual interface and Python's programming environment, this script facilitates the seamless transition from design to code execution. Whether you're a data scientist, a software developer, or an AI enthusiast, this tool streamlines the process of implementing ComfyUI workflows in Python.

Convert this:

To this:

import random
import torch
import sys

sys.path.append("../")
from nodes import (
    VAEDecode,
    KSamplerAdvanced,
    EmptyLatentImage,
    SaveImage,
    CheckpointLoaderSimple,
    CLIPTextEncode,
)


def main():
    with torch.inference_mode():
        checkpointloadersimple = CheckpointLoaderSimple()
        checkpointloadersimple_4 = checkpointloadersimple.load_checkpoint(
            ckpt_name="sd_xl_base_1.0.safetensors"
        )

        emptylatentimage = EmptyLatentImage()
        emptylatentimage_5 = emptylatentimage.generate(
            width=1024, height=1024, batch_size=1
        )

        cliptextencode = CLIPTextEncode()
        cliptextencode_6 = cliptextencode.encode(
            text="evening sunset scenery blue sky nature, glass bottle with a galaxy in it",
            clip=checkpointloadersimple_4[1],
        )

        cliptextencode_7 = cliptextencode.encode(
            text="text, watermark", clip=checkpointloadersimple_4[1]
        )

        checkpointloadersimple_12 = checkpointloadersimple.load_checkpoint(
            ckpt_name="sd_xl_refiner_1.0.safetensors"
        )

        cliptextencode_15 = cliptextencode.encode(
            text="evening sunset scenery blue sky nature, glass bottle with a galaxy in it",
            clip=checkpointloadersimple_12[1],
        )

        cliptextencode_16 = cliptextencode.encode(
            text="text, watermark", clip=checkpointloadersimple_12[1]
        )

        ksampleradvanced = KSamplerAdvanced()
        vaedecode = VAEDecode()
        saveimage = SaveImage()

        for q in range(10):
            ksampleradvanced_10 = ksampleradvanced.sample(
                add_noise="enable",
                noise_seed=random.randint(1, 2**64),
                steps=25,
                cfg=8,
                sampler_name="euler",
                scheduler="normal",
                start_at_step=0,
                end_at_step=20,
                return_with_leftover_noise="enable",
                model=checkpointloadersimple_4[0],
                positive=cliptextencode_6[0],
                negative=cliptextencode_7[0],
                latent_image=emptylatentimage_5[0],
            )

            ksampleradvanced_11 = ksampleradvanced.sample(
                add_noise="disable",
                noise_seed=random.randint(1, 2**64),
                steps=25,
                cfg=8,
                sampler_name="euler",
                scheduler="normal",
                start_at_step=20,
                end_at_step=10000,
                return_with_leftover_noise="disable",
                model=checkpointloadersimple_12[0],
                positive=cliptextencode_15[0],
                negative=cliptextencode_16[0],
                latent_image=ksampleradvanced_10[0],
            )

            vaedecode_17 = vaedecode.decode(
                samples=ksampleradvanced_11[0], vae=checkpointloadersimple_12[2]
            )

            saveimage_19 = saveimage.save_images(
                filename_prefix="ComfyUI", images=vaedecode_17[0]
            )


if __name__ == "__main__":
    main()

Potential Use Cases

Streamlining the process for creating a lean app or pipeline deployment that uses a ComfyUI workflow
Creating programmatic experiments for various prompt/parameter values
Creating large queues for image generation (For example, you could adjust the script to generate 1000 images without clicking ctrl+enter 1000 times)
Easily expanding or iterating on your architecture in Python once a foundational workflow is in place in the GUI

V1.3.0 Release Notes

Generate .py file directly from the ComfyUI Web App

V1.2.1 Release Notes

Dynamically change comfyui_to_python.py parameters with CLI arguments
Hotfix to handle nodes that accept kwargs.

V1.2.0 Release Notes

Updates to adhere to latest changes from ComfyUI

V1.0.0 Release Notes

Use all the custom nodes!
- Custom nodes are now supported. If you run into any issues with code execution, first ensure that the each node works as expected in the GUI. If it works in the GUI, but not in the generated script, please submit an issue.

Installation

Navigate to your ComfyUI/custom_nodes directory

Clone this repo

git clone https://github.com/pydn/ComfyUI-to-Python-Extension.git

After cloning the repo, your ComfyUI directory should look like this:

/comfy
/comfy_extras
/custom_nodes
--/ComfyUI-to-Python-Extension
/input
/models
/output
/script_examples
/web
.gitignore
LICENSE
README.md
comfyui_screenshot.png
cuda_mollac.py
execution.py
extra_model_paths.yaml.example
folder_paths.py
latent_preview.py
main.py
nodes.py
requirements.txt
server.py

Web App Use

Launch ComfyUI
Load your favorite workflow and click Save As Script

Type your desired file name into the pop up screen.
Move .py file from your downloads folder to your ComfyUI directory.
Now you can execute the newly created .py file to generate images without launching a server.

CLI Usage

Navigate to the ComfyUI-to-Python-Extension folder and install requirements
```
pip install -r requirements.txt
```
Launch ComfyUI, click the gear icon over Queue Prompt, then check Enable Dev mode Options. THE SCRIPT WILL NOT WORK IF YOU DO NOT ENABLE THIS OPTION!

Load up your favorite workflows, then click the newly enabled Save (API Format) button under Queue Prompt
Move the downloaded .json workflow file to your ComfyUI/ComfyUI-to-Python-Extension folder
If needed, add arguments when executing comfyui_to_python.py to update the default input_file and output_file to match your .json workflow file and desired .py file name. By default, the script will look for a file called workflow_api.json. You can also update the queue_size variable to your desired number of images that you want to generate in a single script execution. By default, the scripts will generate 10 images. Run python comfyui_to_python.py --help for more details.

6a. Run the script with default arguments:

python comfyui_to_python.py

6b. Run the script with optional arguments:

python comfyui_to_python.py --input_file "workflow_api (2).json" --output_file my_workflow.py --queue_size 100

After running comfyui_to_python.py, a new .py file will be created in the current working directory. If you made no changes, look for workflow_api.py.
Now you can execute the newly created .py file to generate images without launching a server.