ComfyUI-Evaluate-Pack

ComfyUI-Evaluate-Pack

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Transforms a string by dynamically evaluating Python code written in the node.

Usage

Feed a string into Evaluate, write a main(tag: str) -> str in the code widget, read the return value out of tag.

| Parameter | Type | Default | Description | |-----------|------|---------|-------------| | tag | STRING | (required) | Input string passed to main(tag) | | code | STRING (multiline) | sort-tags snippet | Python source that must define def main(tag: str) -> str |

| Output | Description | |--------|-------------| | tag | The string returned by main(tag) |

The default code sorts comma-separated tags alphabetically:

def main(tag: str) -> str:
    tags = [t.strip() for t in tag.split(",") if t.strip()]
    return ", ".join(sorted(tags))

[!WARNING] Evaluate and Evaluates execute arbitrary Python via exec(). Only use them with code you trust.

Evaluates does the same over a list of strings: connect a string list to tags, and the whole list is handed to one main(tags: list[str]) -> str call.

| Parameter | Type | Default | Description | |-----------|------|---------|-------------| | tags | STRING (list) | (required) | Input strings passed to main(tags) | | code | STRING (multiline) | join snippet | Python source that must define def main(tags: list[str]) -> str |

| Output | Description | |--------|-------------| | tag | The string returned by main(tags) |

The default code joins the strings with commas:

def main(tags: list[str]) -> str:
    return ", ".join(tags)

Installation

Search for ComfyUI-Evaluate-Pack in ComfyUI Manager, or:

cd ComfyUI/custom_nodes
git clone https://github.com/alchemine/comfyui-evaluate-pack

Nodes (EvaluatePack/Evaluate)

Evaluate — runs user-defined Python code against an input string and returns the transformed result.

Evaluates — the same over a list of strings, reduced to one output string.