Why 'DiffusionPipeline' doesn't have a __call__ method?
Every pipeline has a__call__method which keeps them can call themselves as a function. But I can’t find__call__method in classDiffusionPipeline.I read DiffusionPipeline code and find nothing about__call__method in this link:DiffusionPipelineWhy?In this linktrain_dreambooth.pyyou can see that DiffusionPipeline do usedcallfunction, so that it can make a inference.May someone can teach me about this, thanks a lot.PS:sorry for my poor English
2023-08-04T17:00:47Z
If you use thefrom_pretrainedmethod of theDiffusionPipelinelike this:from diffusers import DiffusionPipeline

pipe = DiffusionPipeline.from_pretrained("stabilityai/stable-diffusion-xl-base-1.0")The resultingpipeis not only an instance of theDiffusionPipelineclass but also, in this case, an instance of theStableDiffusionXLPipelineclass. You can verify this as follows:from diffusers import StableDiffusionXLPipeline

isinstance(pipe, DiffusionPipeline) and isinstance(pipe, StableDiffusionXLPipeline)Output:TrueThis method internally instantiates an object of theStableDiffusionXLPipelineclass, and similar to other pipelines, this class defines a__call__method.Please be aware that theDiffusionPipelinelacks also an__init__method. Therefore, you cannot perform the following action to instantiate and use an object of only theDiffusionPipelineclass:pipe = DiffusionPipeline(...)Instead, you are required to use thefrom_pretrainedmethod, which returns an object from a class that defines a__call__method.I hope this was helpful, and fingers crossed I didn’t write any inaccuracies!
2024-01-02T06:43:50Z
OK,thanks a lot! That’s really helpful!