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DaSiWa Random String Picker

Category: DaSiWa/Text
Class name: DaSiWa_RandomStringPicker
File: nodes/random_string_picker.py

Overview

The Random String Picker is a text bridge node for prompt variation. It accepts a connected STRING input, replaces each complete {A|B|C} group with one randomly selected option, and outputs the processed text as a STRING.

Everything outside complete {...} groups passes through unchanged.

Inputs

Input Type Description
text STRING Connected text input. Use `{A

Outputs

Output Type Description
text STRING The input text with each complete random group replaced by one selected option.

Syntax

Use curly braces for a random group and separate options with |.

A {red|blue|green} car in {sunlight|rain|fog}

Possible output:

A blue car in fog

Each group is processed independently, so a prompt can contain any number of random groups:

{wide angle|macro} photo of a {cat|robot|flower}, {soft light|hard shadows}

Possible output:

macro photo of a robot, soft light

Pass-through behavior

Only complete groups matching {...} are changed. Text before, after, and between groups remains unchanged.

prefix {A|B} middle {X|Y} suffix

Possible output:

prefix B middle X suffix

The words prefix, middle, and suffix, including spaces and punctuation outside the groups, are preserved.

Unmatched braces are treated as normal text because they do not form a complete random group.

This {will not change

Output:

This {will not change

Notes

  • Empty options are allowed. For example, {small||large} can output small, an empty string, or large.
  • Nested braces are not parsed as nested random groups.
  • The node marks itself changed on each run so ComfyUI will re-evaluate the random choices when queued again.