fix: PrintExpData node crashes with AttributeError on ExpressionSet

[deepme987]

Bug

The PrintExpData node is completely broken — it crashes immediately with:

AttributeError: 'ExpressionSet' object has no attribute 'exp'

Steps to Reproduce

1. Add an ExpData node with any non-zero values
2. Connect it to a PrintExpData: node
3. Execute the workflow
4. Node crashes every time

Root Cause

In nodes.py line 634, PrintExpData.run() references exp.exp:

e = exp.exp * 1000

But the ExpressionSet class (line 475) defines its attributes as .e, .r, .s, .t — there is no .exp attribute:

class ExpressionSet:
    def __init__(self, erst=None, es=None):
        if es != None:
            self.e = copy.deepcopy(es.e)
            self.r = copy.deepcopy(es.r)
            self.s = copy.deepcopy(es.s)
            self.t = copy.deepcopy(es.t)

All other nodes (ExpData, ExpressionEditor, AdvancedLivePortrait) correctly use .e. This is a typo in PrintExpData only.

Fix

One-line change: exp.exp → exp.e

Tested

Verified the fix locally on ComfyUI 0.14.1 with Python 3.12, PyTorch 2.10+cu130, RTX 4090. The PrintExpData: node now correctly prints expression data without crashing.

Environment

• ComfyUI Version: 0.14.1
• OS: Windows 11
• Python: 3.12.11
• PyTorch: 2.10.0+cu130