easy rangeFloat

easy rangeFloat spits out a list of floats - 0.0, 0.1, 0.2, ... up to whatever you set. It's the number generator you reach for when you want to sweep a parameter: try a LoRA at strengths 0.4 through 1.0, or a denoise across 0.3 to 0.7, and see the whole ladder at once instead of running the graph by hand ten times. Feed the list into a node that iterates over it (a loop, or an input that fans out) and you get a batch of results, one per value.

It's a plumbing node, not a generation node, but it's a genuinely useful one for anyone doing systematic comparisons. Think of Python's range() but for floats and with two ways to specify the spacing.

How it works

You define a start and stop, and then either a step size or a target number of values, and the node builds the list. range_mode picks which of those two you're using: give it a step and it counts up by that increment; give it a num_steps and it divides the span into that many evenly-spaced points. end_mode decides whether the stop value itself is included or not. The result is a plain list of floats you can route anywhere a float is accepted.

The inputs that matter

• range_mode - the choice between counting by a fixed step or splitting into a fixed num_steps. This is the first thing to set, because it decides which of the two fields below actually matters.
• start / stop - the bounds of the sweep.
• step - the increment, when you're in step mode. start 0.4, stop 1.0, step 0.1 gives you 0.4, 0.5, ... 1.0.
• num_steps - the count, when you're in num-steps mode. start 0, stop 1, num_steps 5 gives five evenly-spaced values.
• end_mode - Inclusive includes the stop value; the alternative stops just short of it. This is the classic off-by-one control, so if your last value is missing (or unexpectedly present), this is the switch.

Outputs:

• range - the list of floats.
• range_sizes - the count of values produced, as an INT list, useful for driving loop bounds.

How to install it

Via ComfyUI Manager: search "ComfyUI Easy Use", install, restart. Or:

cd ComfyUI/custom_nodes
git clone https://github.com/yolain/ComfyUI-Easy-Use

Then install.bat / pip install -r requirements.txt, restart. Preinstalled on comfy.icu.

Common issues

The two easiest mistakes are both about mode. If you set a step but the node is in num-steps mode (or the reverse), it'll happily ignore the field you meant to use and produce a list you didn't expect - always check range_mode matches the field you filled in. And end_mode is where the off-by-one lives: Inclusive versus exclusive is the difference between your sweep ending on 1.0 or on 0.9, which matters a lot when the endpoint is the case you actually cared about.

Also remember this outputs a list, not a single number. Whatever consumes it has to be able to iterate - wire it into a plain float widget expecting one value and you'll either get only the first entry or a type complaint, depending on the node. It's built to feed loops and fan-out inputs, so pair it with something that knows what to do with many values.