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# ComfyUI Job Iterator
Implements iteration over sequences within a single workflow run.
## Usage
1. Make a SEQUENCE containing the values to use at each step.
2. Turn it into a JOB using a MakeJob node, and enter a name for the attribute.
3. If you need to modify more than one parameter, make more SEQUENCES and turn them into JOBs.
4. Connect to a JobIterator.
5. Connect the attributes output to GetAttribute nodes to pull out the value of a name at the current step.
6. Connect those values into a normal workflow.
7. Click "queue prompt".
## Example
![workflow embedded](job-iterator-example.png)
## Misc Nodes
Also includes some miscellaneous nodes:
* Stringify - returns `str()` and `repr()` of the input.
* Interact - opens a debug REPL on the terminal where you ran ComfyUI whenever it is evaluated.
* Join image batch - turns a batch of images into one tiled image.
* Select from image batch - outputs a single image from a batch.
__init__.py
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NODE_CLASS_MAPPINGS = {}
NODE_DISPLAY_NAME_MAPPINGS = {}
def register_node(c):
assert not isinstance(c.RETURN_TYPES, str), "Error: string found instead of tuple."
assert not isinstance(c.RETURN_NAMES, str), "Error: string found instead of tuple."
NODE_CLASS_MAPPINGS[c.__name__] = c
NODE_DISPLAY_NAME_MAPPINGS[c.__name__] = c.__name__
return c
from . import sequence, job, misc
interact.py
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import sys
import os
import textwrap
import code
from . import register_node
@register_node
class RestoreStdStreams(object):
# ComfyUI-Manager patches sys.stdout and sys.stder
# which breaks GNU Readline support and makes the
# REPL annoying to use. This context manager temporarily
# puts back the originals.
def __enter__(self):
self._stdout, self._stderr = sys.stdout, sys.stderr
sys.stdout, sys.stderr = sys.__stdout__, sys.__stderr__
self._stdout.flush(); self._stderr.flush()
def __exit__(self, exc_type, exc_value, traceback):
_stdout, _stderr = sys.stdout, sys.stderr
sys.stdout, sys.stderr = self._stdout, self._stderr
_stdout.flush(); _stderr.flush()
EOF = 'Ctrl-Z plus Return' if os.sep == '\\' else 'Ctrl-D (i.e. EOF)'
MESSAGE = f"Press {EOF} to continue processing."
class Quitter:
# Replace exit() and quit() to make sure the user exits with EOF
# otherwise the whole server gets terminated.
def __repr__(self):
return MESSAGE
def __call__(self):
print(MESSAGE)
class Interact:
"""Opens an interactive REPL whenever the node is evaluated."""
@classmethod
def INPUT_TYPES(s):
return {
"required": {},
"optional": {x: "*" for x in ('a', 'b', 'c', 'd')},
}
RETURN_TYPES = ()
RETURN_NAMES = ()
FUNCTION = "interact"
CATEGORY = "ali1234/debug"
OUTPUT_NODE = True
def interact(self, **kwargs):
if sys.__stdout__.isatty():
with RestoreStdStreams():
code.interact(
banner=textwrap.dedent(f"""
Interactive debugging started.
Try `print(a)`.
{MESSAGE}
"""),
exitmsg="Resuming workflow...",
local={
**kwargs,
'quit': Quitter(),
'exit': Quitter()
}
)
else:
# Don't block the server if there is no tty.
print("Skipping interactive prompt because there is no tty.")
return ()
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job.py
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import collections
import itertools
from execution import PromptExecutor
from . import register_node
@register_node
class MakeJob:
"""Turns a sequence into a job with one attribute."""
@classmethod
def INPUT_TYPES(s):
return {
"required": {
"sequence": ("SEQUENCE", ),
"name": ("STRING", {"default": ''}),
},
}
RETURN_TYPES = ("JOB", "INT")
RETURN_NAMES = ("job", "count")
FUNCTION = "go"
CATEGORY = "ali1234/job"
def go(self, sequence, name):
result = [{name: value} for value in sequence]
return (result, len(result))
@register_node
class CombineJobs(MakeJob):
"""Combines multiple jobs."""
@classmethod
def INPUT_TYPES(s):
return {
"required": {
"a": ("JOB", ),
"method": (("zip", "product"), {"default": "zip"}),
},
"optional": {
x: ("JOB", ) for x in ('b', 'c', 'd', 'e')
}
}
def go(self, method, **kwargs):
method = {'product': itertools.product, 'zip': zip}[method]
result = [collections.ChainMap(*reversed(jobs)) for jobs in method(*kwargs.values())]
return (result, len(result))
@register_node
class GetJobStep:
"""Gets the job step by number."""
@classmethod
def INPUT_TYPES(s):
return {
"required": {
"job": ("JOB", ),
"step": ("INT", {"default": 0}),
},
}
RETURN_TYPES = ("ATTRIBUTES", )
RETURN_NAMES = ("attributes", )
FUNCTION = "go"
CATEGORY = "ali1234/job"
def go(self, job, step):
return (job[step], )
@register_node
class FormatAttributes:
"""Applies attributes to a format string."""
@classmethod
def INPUT_TYPES(s):
return {
"required": {
"attributes": ("ATTRIBUTES",),
"format": ("STRING", {'default': '', 'multiline': True, "dynamicPrompts": False})
},
}
RETURN_TYPES = ("STRING", )
RETURN_NAMES = ("string", )
FUNCTION = "go"
CATEGORY = "ali1234/job"
def go(self, attributes, format):
return (format.format(**attributes), )
class GetAttribute:
"""Gets a named attribute from a step."""
@classmethod
def INPUT_TYPES(s):
return {
"required": {
"attributes": ("ATTRIBUTES", ),
"name": ("STRING", {"default": ''}),
},
}
RETURN_TYPES = ("*", )
RETURN_NAMES = ("value", )
FUNCTION = "go"
CATEGORY = "ali1234/job"
def go(self, attributes, name):
return (attributes[name], )
# Dynamically register typed attribute getters to avoid wildcard bug
# https://github.com/comfyanonymous/ComfyUI/pull/770
for t in ('INT', 'FLOAT', 'STRING'):
register_node(type(
'GetAttribute'+t.title(),
(GetAttribute, ),
{
'RETURN_TYPES': (t, ),
}
))
@register_node
class JobIterator:
"""Magic node that runs the workflow multiple times until all steps are done."""
@classmethod
def INPUT_TYPES(s):
return {
"required": {
"job": ("JOB",),
"start_step": ("INT", {"default": 0}),
},
}
RETURN_TYPES = ("ATTRIBUTES", "INT", "INT")
RETURN_NAMES = ("attributes", "count", "step")
FUNCTION = "go"
CATEGORY = "ali1234/job"
def go(self, job, start_step):
print(f'JobIterator: {start_step} / {len(job) - 1}')
return (job[start_step], len(job), start_step)
# finally monkey patch the prompt executor to handle batch prompts.
orig_execute = PromptExecutor.execute
def execute(self, prompt, prompt_id, extra_data={}, execute_outputs=[]):
print("Prompt executor has been patched!")
orig_execute(self, prompt, prompt_id, extra_data, execute_outputs)
job_iterator = None
for k, v in prompt.items():
try:
if v['class_type'] == 'JobIterator':
job_iterator = k
break
except KeyError:
continue
if job_iterator is not None:
steps = self.outputs[job_iterator][1][0]
while prompt[job_iterator]['inputs']['start_step'] < (steps - 1):
prompt[job_iterator]['inputs']['start_step'] += 1
orig_execute(self, prompt, prompt_id, extra_data, execute_outputs)
PromptExecutor.execute = execute
misc.py
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import torch
from . import register_node
@register_node
class Stringify:
"""Convert any input to str/repr."""
@classmethod
def INPUT_TYPES(s):
return {
"required": {
"x": ("*", ),
},
}
RETURN_TYPES = ("STRING", "STRING")
RETURN_NAMES = ("str", "repr")
FUNCTION = "go"
CATEGORY = "ali1234/debug"
def go(self, x):
return (str(x), repr(x))
class JoinImageBatch:
"""Turns an image batch into one big image."""
@classmethod
def INPUT_TYPES(s):
"""
Joins an image batch into a single image.
"""
return {
"required": {
"images": ("IMAGE",),
"mode": (("horizontal", "vertical"), {"default": "horizontal"}),
},
}
RETURN_TYPES = ("IMAGE",)
RETURN_NAMES = ("image",)
FUNCTION = "join"
CATEGORY = "ali1234/image"
def join(self, images, mode):
n, h, w, c = images.shape
image = None
if mode == "vertical":
# for vertical we can just reshape
image = images.reshape(1, n * h, w, c)
elif mode == "horizontal":
# for horizontal we have to swap axes
image = torch.transpose(torch.transpose(images, 1, 2).reshape(1, n * w, h, c), 1, 2)
return (image,)
class SelectImageBatch:
"""Selects one image from an image batch."""
@classmethod
def INPUT_TYPES(s):
return {
"required": {
"images": ("IMAGE",),
"select": ("INT", {"default": 0, "min": 0, "max": 99999, "step": 1}),
},
}
RETURN_TYPES = ("IMAGE",)
RETURN_NAMES = ("image",)
FUNCTION = "select"
CATEGORY = "ali1234/image"
def select(self, images, select):
n, h, w, c = images.shape
if select >= n:
select = n - 1
return (images[select].reshape(1, h, w, c),)
sequence.py
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import ast
import functools
import itertools
from . import register_node
# Sequence creation.
@register_node
class Range:
@classmethod
def INPUT_TYPES(s):
return {
"required": {
"start": ("INT", {"default": 0, "min": 0, "max": 9999999, "step": 1}),
"stop": ("INT", {"default": 0, "min": 0, "max": 9999999, "step": 1}),
"step": ("INT", {"default": 0, "min": 0, "max": 9999999, "step": 1}),
},
}
RETURN_TYPES = ("SEQUENCE", )
RETURN_NAMES = ("sequence", )
FUNCTION = "go"
CATEGORY = "ali1234/sequence"
def go(self, start, stop, step):
return (range(start, stop, step), )
@register_node
class Literal:
@classmethod
def INPUT_TYPES(s):
return {
"required": {
"literal": ("STRING", {'default': '', 'multiline': True})
},
}
RETURN_TYPES = ("SEQUENCE", )
RETURN_NAMES = ("sequence", )
FUNCTION = "go"
CATEGORY = "ali1234/sequence"
def go(self, literal):
return (ast.literal_eval(literal), )
# Processing of existing sequences.
@register_node
class Reorder:
@classmethod
def INPUT_TYPES(s):
return {
"required": {
"sequence": ("SEQUENCE", ),
"method": (("reverse", "sort", "reverse sort"), {"default": "sort"}),
},
}
RETURN_TYPES = ("SEQUENCE", )
RETURN_NAMES = ("sequence", )
FUNCTION = "go"
CATEGORY = "ali1234/sequence"
def go(self, sequence, method):
f = {"reverse": reversed, "sort": sorted, "reverse_sort": lambda x: sorted(x, reverse=True)}[method]
return (f(sequence), )
@register_node
class Combinations:
@classmethod
def INPUT_TYPES(s):
return {
"required": {
"sequence": ("SEQUENCE", ),
"count": ("INT", {"default": 0, "min": 0, "max": 9999999, "step": 1}),
"replacement": ("BOOLEAN", {"default": False, "label_on": "Yes", "label_off": "No"}),
},
}
RETURN_TYPES = ("SEQUENCE", )
RETURN_NAMES = ("sequence", )
FUNCTION = "go"
CATEGORY = "ali1234/sequence"
def go(self, sequence, count, replacement):
if replacement:
return (itertools.combinations_with_replacement(sequence, count), )
else:
return (itertools.combinations(sequence, count), )
@register_node
class Permutations:
@classmethod
def INPUT_TYPES(s):
return {
"required": {
"sequence": ("SEQUENCE", ),
"count": ("INT", {"default": 0, "min": 0, "max": 9999999, "step": 1}),
},
}
RETURN_TYPES = ("SEQUENCE", )
RETURN_NAMES = ("sequence", )
FUNCTION = "go"
CATEGORY = "ali1234/attributes/combinatorics"
def go(self, sequence, count):
return ([x for x in itertools.permutations(sequence, count)], )
@register_node
class Join:
@classmethod
def INPUT_TYPES(s):
return {
"required": {
"sequence": ("SEQUENCE", ),
"join_str": ("STRING", {'default': ', '}),
},
}
RETURN_TYPES = ("SEQUENCE", )
RETURN_NAMES = ("sequence", )
FUNCTION = "go"
CATEGORY = "ali1234/attributes/combinatorics"
def go(self, sequence, join_str):
return ([join_str.join(x) for x in sequence], )