Text File Line Loader

You have a text file of 50 prompts, one per line, and you want each queue run to grab the next one. If you've tried to script that yourself you know the pain: ComfyUI doesn't carry state, so "next line" is genuinely hard to express. Text File Line Loader does exactly that, and it's the node you want when you're batch-generating from a prompt list, a config file, or a dataset manifest.

It's the utility twin of the pack's Number Counter - same "remember where I left off" energy, aimed at text instead of integers. Wire its line_text into your positive prompt (via a text-concat node) and each run walks down the file automatically.

How it works

Point file_path at a text file. Two modes, and they behave very differently:

• automatic - the node keeps a persistent "next line" pointer keyed by label (default "TextBatch"). Each run returns the current line, then advances. When it reaches the end it wraps back to the top. This is the iterate-through-the-file mode.
• index - grab the line at a fixed index (0-based). No state, deterministic, and the file is re-read and re-hashed each run so edits bust the cache automatically. Perfect when the index comes from a counter node rather than from time.

The label field is the quiet gotcha. The automatic mode stores its pointer in a small persisted store under whatever label you gave - two nodes with the same label share a pointer and will fight over the next line. Give every iterator its own label, and use a fresh label if you want to start the file over.

The IS_CHANGED behavior is the smart part: in index mode the node hashes the file contents so an edit to the file triggers a re-run; in automatic mode it always re-runs so the pointer actually advances. Both work as intended - just know that an always-dirty node sits outside ComfyUI's cache, so keep it off the critical path of giant graphs.

Outputs are line_text (the line, stripped of whitespace) and line_count (total non-empty lines - handy for computing "how many prompts until this finishes" or feeding a stop condition). Blank lines are skipped when counting, so the file is really a list of prompts, not raw text.

Install

Search "Trent Nodes" in ComfyUI Manager, or:

cd ComfyUI/custom_nodes
git clone https://github.com/TrentHunter82/TrentNodes.git
cd TrentNodes
pip install -r requirements.txt

Nothing model-related here - just the pack's base Python deps. Restart ComfyUI after installing. (ComfyUI Manager has been flaky on this pack per the author, tracing to an early repo rename; if it errors, clone manually.)

Common issues

• Two nodes, same label, skipping lines. Your iterators share a pointer. Change the label on one.
• "It stopped advancing." If mode is on index, it never advances - that's the point. Switch to automatic.
• Missing file returns empty. A nonexistent file_path yields ("", 0) rather than a loud error. Check the console, which logs it.
• Want to restart the list? Change the label or the file path; both reset the pointer.

For prompt-list batch runs, this is the reliable little workhorse. Pair it with the pack's Number Counter to drive a companion index, or leave it in automatic and just let the file be your loop.