Move accelerate to a soft-dependency (#1134)

* finish

* finish

* Update src/diffusers/modeling_utils.py

* Update src/diffusers/pipeline_utils.py
Co-authored-by: Anton Lozhkov <anton@huggingface.co>

* more fixes

* fix
Co-authored-by: Anton Lozhkov <anton@huggingface.co>

src/diffusers/__init__.py

 from .utils import (
-    is_accelerate_available,
     is_flax_available,
     is_inflect_available,
     is_onnx_available,
@@ -17,13 +16,6 @@ from .onnx_utils import OnnxRuntimeModel
 from .utils import logging
 
 
-# This will create an extra dummy file "dummy_torch_and_accelerate_objects.py"
-# TODO: (patil-suraj, anton-l) maybe import everything under is_torch_and_accelerate_available
-if is_torch_available() and not is_accelerate_available():
-    error_msg = "Please install the `accelerate` library to use Diffusers with PyTorch. You can do so by running `pip install diffusers[torch]`. Or if torch is already installed, you can run `pip install accelerate`."  # noqa: E501
-    raise ImportError(error_msg)
-
-
 if is_torch_available():
     from .modeling_utils import ModelMixin
     from .models import AutoencoderKL, Transformer2DModel, UNet1DModel, UNet2DConditionModel, UNet2DModel, VQModel

src/diffusers/modeling_utils.py

@@ -21,15 +21,20 @@ from typing import Callable, List, Optional, Tuple, Union
 import torch
 from torch import Tensor, device
 
-import accelerate
-from accelerate.utils import set_module_tensor_to_device
-from accelerate.utils.versions import is_torch_version
 from huggingface_hub import hf_hub_download
 from huggingface_hub.utils import EntryNotFoundError, RepositoryNotFoundError, RevisionNotFoundError
 from requests import HTTPError
 
 from . import __version__
-from .utils import CONFIG_NAME, DIFFUSERS_CACHE, HUGGINGFACE_CO_RESOLVE_ENDPOINT, WEIGHTS_NAME, logging
+from .utils import (
+    CONFIG_NAME,
+    DIFFUSERS_CACHE,
+    HUGGINGFACE_CO_RESOLVE_ENDPOINT,
+    WEIGHTS_NAME,
+    is_accelerate_available,
+    is_torch_version,
+    logging,
+)
 
 
 logger = logging.get_logger(__name__)
@@ -41,6 +46,12 @@ else:
     _LOW_CPU_MEM_USAGE_DEFAULT = False
 
 
+if is_accelerate_available():
+    import accelerate
+    from accelerate.utils import set_module_tensor_to_device
+    from accelerate.utils.versions import is_torch_version
+
+
 def get_parameter_device(parameter: torch.nn.Module):
     try:
         return next(parameter.parameters()).device
@@ -319,6 +330,21 @@ class ModelMixin(torch.nn.Module):
         device_map = kwargs.pop("device_map", None)
         low_cpu_mem_usage = kwargs.pop("low_cpu_mem_usage", _LOW_CPU_MEM_USAGE_DEFAULT)
 
+        if low_cpu_mem_usage and not is_accelerate_available():
+            low_cpu_mem_usage = False
+            logger.warn(
+                "Cannot initialize model with low cpu memory usage because `accelerate` was not found in the"
+                " environment. Defaulting to `low_cpu_mem_usage=False`. It is strongly recommended to install"
+                " `accelerate` for faster and less memory-intense model loading. You can do so with: \n```\npip"
+                " install accelerate\n```\n."
+            )
+
+        if device_map is not None and not is_accelerate_available():
+            raise NotImplementedError(
+                "Loading and dispatching requires `accelerate`. Please make sure to install accelerate or set"
+                " `device_map=None`. You can install accelerate with `pip install accelerate`."
+            )
+
         # Check if we can handle device_map and dispatching the weights
         if device_map is not None and not is_torch_version(">=", "1.9.0"):
             raise NotImplementedError(

src/diffusers/pipeline_utils.py

@@ -25,7 +25,6 @@ import torch
 
 import diffusers
 import PIL
-from accelerate.utils.versions import is_torch_version
 from huggingface_hub import snapshot_download
 from packaging import version
 from PIL import Image
@@ -43,6 +42,8 @@ from .utils import (
     WEIGHTS_NAME,
     BaseOutput,
     deprecate,
+    is_accelerate_available,
+    is_torch_version,
     is_transformers_available,
     logging,
 )
@@ -397,6 +398,15 @@ class DiffusionPipeline(ConfigMixin):
         device_map = kwargs.pop("device_map", None)
         low_cpu_mem_usage = kwargs.pop("low_cpu_mem_usage", _LOW_CPU_MEM_USAGE_DEFAULT)
 
+        if low_cpu_mem_usage and not is_accelerate_available():
+            low_cpu_mem_usage = False
+            logger.warn(
+                "Cannot initialize model with low cpu memory usage because `accelerate` was not found in the"
+                " environment. Defaulting to `low_cpu_mem_usage=False`. It is strongly recommended to install"
+                " `accelerate` for faster and less memory-intense model loading. You can do so with: \n```\npip"
+                " install accelerate\n```\n."
+            )
+
         if device_map is not None and not is_torch_version(">=", "1.9.0"):
             raise NotImplementedError(
                 "Loading and dispatching requires torch >= 1.9.0. Please either update your PyTorch version or set"

src/diffusers/utils/__init__.py

@@ -31,6 +31,7 @@ from .import_utils import (
     is_scipy_available,
     is_tf_available,
     is_torch_available,
+    is_torch_version,
     is_transformers_available,
     is_unidecode_available,
     requires_backends,

src/diffusers/utils/dummy_pt_objects.py

@@ -272,21 +272,6 @@ class ScoreSdeVePipeline(metaclass=DummyObject):
         requires_backends(cls, ["torch"])
 
 
-class VQDiffusionPipeline(metaclass=DummyObject):
-    _backends = ["torch"]
-
-    def __init__(self, *args, **kwargs):
-        requires_backends(self, ["torch"])
-
-    @classmethod
-    def from_config(cls, *args, **kwargs):
-        requires_backends(cls, ["torch"])
-
-    @classmethod
-    def from_pretrained(cls, *args, **kwargs):
-        requires_backends(cls, ["torch"])
-
-
 class DDIMScheduler(metaclass=DummyObject):
     _backends = ["torch"]
 

src/diffusers/utils/dummy_torch_and_accelerate_objects.py

-# This file is autogenerated by the command `make fix-copies`, do not edit.
-# flake8: noqa
-
-from ..utils import DummyObject, requires_backends
-
-
-class ModelMixin(metaclass=DummyObject):
-    _backends = ["torch", "accelerate"]
-
-    def __init__(self, *args, **kwargs):
-        requires_backends(self, ["torch", "accelerate"])
-
-    @classmethod
-    def from_config(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-    @classmethod
-    def from_pretrained(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-
-class AutoencoderKL(metaclass=DummyObject):
-    _backends = ["torch", "accelerate"]
-
-    def __init__(self, *args, **kwargs):
-        requires_backends(self, ["torch", "accelerate"])
-
-    @classmethod
-    def from_config(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-    @classmethod
-    def from_pretrained(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-
-class Transformer2DModel(metaclass=DummyObject):
-    _backends = ["torch", "accelerate"]
-
-    def __init__(self, *args, **kwargs):
-        requires_backends(self, ["torch", "accelerate"])
-
-    @classmethod
-    def from_config(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-    @classmethod
-    def from_pretrained(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-
-class UNet1DModel(metaclass=DummyObject):
-    _backends = ["torch", "accelerate"]
-
-    def __init__(self, *args, **kwargs):
-        requires_backends(self, ["torch", "accelerate"])
-
-    @classmethod
-    def from_config(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-    @classmethod
-    def from_pretrained(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-
-class UNet2DConditionModel(metaclass=DummyObject):
-    _backends = ["torch", "accelerate"]
-
-    def __init__(self, *args, **kwargs):
-        requires_backends(self, ["torch", "accelerate"])
-
-    @classmethod
-    def from_config(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-    @classmethod
-    def from_pretrained(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-
-class UNet2DModel(metaclass=DummyObject):
-    _backends = ["torch", "accelerate"]
-
-    def __init__(self, *args, **kwargs):
-        requires_backends(self, ["torch", "accelerate"])
-
-    @classmethod
-    def from_config(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-    @classmethod
-    def from_pretrained(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-
-class VQModel(metaclass=DummyObject):
-    _backends = ["torch", "accelerate"]
-
-    def __init__(self, *args, **kwargs):
-        requires_backends(self, ["torch", "accelerate"])
-
-    @classmethod
-    def from_config(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-    @classmethod
-    def from_pretrained(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-
-def get_constant_schedule(*args, **kwargs):
-    requires_backends(get_constant_schedule, ["torch", "accelerate"])
-
-
-def get_constant_schedule_with_warmup(*args, **kwargs):
-    requires_backends(get_constant_schedule_with_warmup, ["torch", "accelerate"])
-
-
-def get_cosine_schedule_with_warmup(*args, **kwargs):
-    requires_backends(get_cosine_schedule_with_warmup, ["torch", "accelerate"])
-
-
-def get_cosine_with_hard_restarts_schedule_with_warmup(*args, **kwargs):
-    requires_backends(get_cosine_with_hard_restarts_schedule_with_warmup, ["torch", "accelerate"])
-
-
-def get_linear_schedule_with_warmup(*args, **kwargs):
-    requires_backends(get_linear_schedule_with_warmup, ["torch", "accelerate"])
-
-
-def get_polynomial_decay_schedule_with_warmup(*args, **kwargs):
-    requires_backends(get_polynomial_decay_schedule_with_warmup, ["torch", "accelerate"])
-
-
-def get_scheduler(*args, **kwargs):
-    requires_backends(get_scheduler, ["torch", "accelerate"])
-
-
-class DiffusionPipeline(metaclass=DummyObject):
-    _backends = ["torch", "accelerate"]
-
-    def __init__(self, *args, **kwargs):
-        requires_backends(self, ["torch", "accelerate"])
-
-    @classmethod
-    def from_config(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-    @classmethod
-    def from_pretrained(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-
-class DanceDiffusionPipeline(metaclass=DummyObject):
-    _backends = ["torch", "accelerate"]
-
-    def __init__(self, *args, **kwargs):
-        requires_backends(self, ["torch", "accelerate"])
-
-    @classmethod
-    def from_config(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-    @classmethod
-    def from_pretrained(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-
-class DDIMPipeline(metaclass=DummyObject):
-    _backends = ["torch", "accelerate"]
-
-    def __init__(self, *args, **kwargs):
-        requires_backends(self, ["torch", "accelerate"])
-
-    @classmethod
-    def from_config(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-    @classmethod
-    def from_pretrained(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-
-class DDPMPipeline(metaclass=DummyObject):
-    _backends = ["torch", "accelerate"]
-
-    def __init__(self, *args, **kwargs):
-        requires_backends(self, ["torch", "accelerate"])
-
-    @classmethod
-    def from_config(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-    @classmethod
-    def from_pretrained(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-
-class KarrasVePipeline(metaclass=DummyObject):
-    _backends = ["torch", "accelerate"]
-
-    def __init__(self, *args, **kwargs):
-        requires_backends(self, ["torch", "accelerate"])
-
-    @classmethod
-    def from_config(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-    @classmethod
-    def from_pretrained(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-
-class LDMPipeline(metaclass=DummyObject):
-    _backends = ["torch", "accelerate"]
-
-    def __init__(self, *args, **kwargs):
-        requires_backends(self, ["torch", "accelerate"])
-
-    @classmethod
-    def from_config(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-    @classmethod
-    def from_pretrained(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-
-class PNDMPipeline(metaclass=DummyObject):
-    _backends = ["torch", "accelerate"]
-
-    def __init__(self, *args, **kwargs):
-        requires_backends(self, ["torch", "accelerate"])
-
-    @classmethod
-    def from_config(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-    @classmethod
-    def from_pretrained(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-
-class RePaintPipeline(metaclass=DummyObject):
-    _backends = ["torch", "accelerate"]
-
-    def __init__(self, *args, **kwargs):
-        requires_backends(self, ["torch", "accelerate"])
-
-    @classmethod
-    def from_config(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-    @classmethod
-    def from_pretrained(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-
-class ScoreSdeVePipeline(metaclass=DummyObject):
-    _backends = ["torch", "accelerate"]
-
-    def __init__(self, *args, **kwargs):
-        requires_backends(self, ["torch", "accelerate"])
-
-    @classmethod
-    def from_config(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-    @classmethod
-    def from_pretrained(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-
-class DDIMScheduler(metaclass=DummyObject):
-    _backends = ["torch", "accelerate"]
-
-    def __init__(self, *args, **kwargs):
-        requires_backends(self, ["torch", "accelerate"])
-
-    @classmethod
-    def from_config(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-    @classmethod
-    def from_pretrained(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-
-class DDPMScheduler(metaclass=DummyObject):
-    _backends = ["torch", "accelerate"]
-
-    def __init__(self, *args, **kwargs):
-        requires_backends(self, ["torch", "accelerate"])
-
-    @classmethod
-    def from_config(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-    @classmethod
-    def from_pretrained(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-
-class EulerAncestralDiscreteScheduler(metaclass=DummyObject):
-    _backends = ["torch", "accelerate"]
-
-    def __init__(self, *args, **kwargs):
-        requires_backends(self, ["torch", "accelerate"])
-
-    @classmethod
-    def from_config(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-    @classmethod
-    def from_pretrained(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-
-class EulerDiscreteScheduler(metaclass=DummyObject):
-    _backends = ["torch", "accelerate"]
-
-    def __init__(self, *args, **kwargs):
-        requires_backends(self, ["torch", "accelerate"])
-
-    @classmethod
-    def from_config(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-    @classmethod
-    def from_pretrained(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-
-class IPNDMScheduler(metaclass=DummyObject):
-    _backends = ["torch", "accelerate"]
-
-    def __init__(self, *args, **kwargs):
-        requires_backends(self, ["torch", "accelerate"])
-
-    @classmethod
-    def from_config(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-    @classmethod
-    def from_pretrained(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-
-class KarrasVeScheduler(metaclass=DummyObject):
-    _backends = ["torch", "accelerate"]
-
-    def __init__(self, *args, **kwargs):
-        requires_backends(self, ["torch", "accelerate"])
-
-    @classmethod
-    def from_config(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-    @classmethod
-    def from_pretrained(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-
-class PNDMScheduler(metaclass=DummyObject):
-    _backends = ["torch", "accelerate"]
-
-    def __init__(self, *args, **kwargs):
-        requires_backends(self, ["torch", "accelerate"])
-
-    @classmethod
-    def from_config(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-    @classmethod
-    def from_pretrained(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-
-class RePaintScheduler(metaclass=DummyObject):
-    _backends = ["torch", "accelerate"]
-
-    def __init__(self, *args, **kwargs):
-        requires_backends(self, ["torch", "accelerate"])
-
-    @classmethod
-    def from_config(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-    @classmethod
-    def from_pretrained(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-
-class SchedulerMixin(metaclass=DummyObject):
-    _backends = ["torch", "accelerate"]
-
-    def __init__(self, *args, **kwargs):
-        requires_backends(self, ["torch", "accelerate"])
-
-    @classmethod
-    def from_config(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-    @classmethod
-    def from_pretrained(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-
-class ScoreSdeVeScheduler(metaclass=DummyObject):
-    _backends = ["torch", "accelerate"]
-
-    def __init__(self, *args, **kwargs):
-        requires_backends(self, ["torch", "accelerate"])
-
-    @classmethod
-    def from_config(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-    @classmethod
-    def from_pretrained(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-
-class VQDiffusionScheduler(metaclass=DummyObject):
-    _backends = ["torch", "accelerate"]
-
-    def __init__(self, *args, **kwargs):
-        requires_backends(self, ["torch", "accelerate"])
-
-    @classmethod
-    def from_config(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-    @classmethod
-    def from_pretrained(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-
-class EMAModel(metaclass=DummyObject):
-    _backends = ["torch", "accelerate"]
-
-    def __init__(self, *args, **kwargs):
-        requires_backends(self, ["torch", "accelerate"])
-
-    @classmethod
-    def from_config(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])
-
-    @classmethod
-    def from_pretrained(cls, *args, **kwargs):
-        requires_backends(cls, ["torch", "accelerate"])

src/diffusers/utils/import_utils.py

@@ -15,11 +15,14 @@
 Import utilities: Utilities related to imports and our lazy inits.
 """
 import importlib.util
+import operator as op
 import os
 import sys
 from collections import OrderedDict
+from typing import Union
 
 from packaging import version
+from packaging.version import Version, parse
 
 from . import logging
 
@@ -40,6 +43,8 @@ USE_TF = os.environ.get("USE_TF", "AUTO").upper()
 USE_TORCH = os.environ.get("USE_TORCH", "AUTO").upper()
 USE_JAX = os.environ.get("USE_FLAX", "AUTO").upper()
 
+STR_OPERATION_TO_FUNC = {">": op.gt, ">=": op.ge, "==": op.eq, "!=": op.ne, "<=": op.le, "<": op.lt}
+
 _torch_version = "N/A"
 if USE_TORCH in ENV_VARS_TRUE_AND_AUTO_VALUES and USE_TF not in ENV_VARS_TRUE_VALUES:
     _torch_available = importlib.util.find_spec("torch") is not None
@@ -309,3 +314,36 @@ class DummyObject(type):
         if key.startswith("_"):
             return super().__getattr__(cls, key)
         requires_backends(cls, cls._backends)
+
+
+# This function was copied from: https://github.com/huggingface/accelerate/blob/874c4967d94badd24f893064cc3bef45f57cadf7/src/accelerate/utils/versions.py#L319
+def compare_versions(library_or_version: Union[str, Version], operation: str, requirement_version: str):
+    """
+    Args:
+    Compares a library version to some requirement using a given operation.
+        library_or_version (`str` or `packaging.version.Version`):
+            A library name or a version to check.
+        operation (`str`):
+            A string representation of an operator, such as `">"` or `"<="`.
+        requirement_version (`str`):
+            The version to compare the library version against
+    """
+    if operation not in STR_OPERATION_TO_FUNC.keys():
+        raise ValueError(f"`operation` must be one of {list(STR_OPERATION_TO_FUNC.keys())}, received {operation}")
+    operation = STR_OPERATION_TO_FUNC[operation]
+    if isinstance(library_or_version, str):
+        library_or_version = parse(importlib_metadata.version(library_or_version))
+    return operation(library_or_version, parse(requirement_version))
+
+
+# This function was copied from: https://github.com/huggingface/accelerate/blob/874c4967d94badd24f893064cc3bef45f57cadf7/src/accelerate/utils/versions.py#L338
+def is_torch_version(operation: str, version: str):
+    """
+    Args:
+    Compares the current PyTorch version to a given reference with an operation.
+        operation (`str`):
+            A string representation of an operator, such as `">"` or `"<="`
+        version (`str`):
+            A string version of PyTorch
+    """
+    return compare_versions(parse(_torch_version), operation, version)

tests/repo_utils/test_check_dummies.py

@@ -52,13 +52,13 @@ class CheckDummiesTester(unittest.TestCase):
     def test_read_init(self):
         objects = read_init()
         # We don't assert on the exact list of keys to allow for smooth grow of backend-specific objects
-        self.assertIn("torch_and_accelerate", objects)
+        self.assertIn("torch", objects)
         self.assertIn("torch_and_transformers", objects)
         self.assertIn("flax_and_transformers", objects)
         self.assertIn("torch_and_transformers_and_onnx", objects)
 
         # Likewise, we can't assert on the exact content of a key
-        self.assertIn("UNet2DModel", objects["torch_and_accelerate"])
+        self.assertIn("UNet2DModel", objects["torch"])
         self.assertIn("FlaxUNet2DConditionModel", objects["flax"])
         self.assertIn("StableDiffusionPipeline", objects["torch_and_transformers"])
         self.assertIn("FlaxStableDiffusionPipeline", objects["flax_and_transformers"])