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warn that pipeline.blocks is a copy #15110

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warn that pipeline.blocks is a copy #15110

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8 changes: 8 additions & 0 deletions src/diffusers/modular_pipelines/modular_pipeline.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2182,6 +2182,14 @@ def blocks(self) -> ModularPipelineBlocks:
Returns:
- A copy of the pipeline blocks
"""
# In-place edits of this copy (for example `pipe.blocks.sub_blocks.insert(...)`) do not
# change the pipeline. Say so once, and point at the supported path.
if not getattr(ModularPipeline.blocks.fget, "_warned_about_copy", False):
logger.warning(
"`pipeline.blocks` is a copy, so in-place edits do not change this pipeline. "
"Edit the blocks, then create a new pipeline with `blocks.init_pipeline()`."
)
ModularPipeline.blocks.fget._warned_about_copy = True
return deepcopy(self._blocks)

def register_components(self, **kwargs):
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