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<meta charset="utf-8" /><meta name="hf:doc:metadata" content="{&quot;title&quot;:&quot;来自 DiffusionPipeline&quot;,&quot;local&quot;:&quot;coming-from-diffusionpipeline&quot;,&quot;sections&quot;:[],&quot;depth&quot;:1}"/>
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<!--1w018en--><meta name="hf:doc:metadata" content="{&quot;title&quot;:&quot;Coming from DiffusionPipeline&quot;,&quot;local&quot;:&quot;coming-from-diffusionpipeline&quot;,&quot;sections&quot;:[],&quot;depth&quot;:1}"/><!---->
<link href="/docs/diffusers/main/en/_app/immutable/assets/0.tn0RQdqM.css" rel="modulepreload"> <!--[--><!--[0--><!--[--><!--[0--><!--[--><p></p> <div class="items-center shrink-0 min-w-[100px] max-sm:min-w-[50px] justify-end ml-auto flex" style="float: inline-end; margin-inline-start: 10px; display: inline-flex; position: relative; z-index: 10;"><div dir="ltr" class="inline-flex rounded-md max-sm:rounded-sm"><button class="inline-flex items-center gap-1 h-7 max-sm:h-7 px-2 max-sm:px-1.5 text-sm font-medium text-gray-800 border border-r-0 rounded-l-md max-sm:rounded-l-sm border-gray-200 bg-white hover:shadow-inner dark:border-gray-850 dark:bg-gray-950 dark:text-gray-200 dark:hover:bg-gray-800" aria-live="polite"><span class="inline-flex items-center justify-center rounded-md p-0.5 max-sm:p-0 hover:text-gray-800 dark:hover:text-gray-200"><svg class="sm:size-3.5 size-3" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" fill="currentColor" focusable="false" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 32 32"><path d="M28,10V28H10V10H28m0-2H10a2,2,0,0,0-2,2V28a2,2,0,0,0,2,2H28a2,2,0,0,0,2-2V10a2,2,0,0,0-2-2Z" transform="translate(0)"></path><path d="M4,18H2V4A2,2,0,0,1,4,2H18V4H4Z" transform="translate(0)"></path><rect fill="none" width="32" height="32"></rect></svg><!----></span> <span dir="auto">Copy page</span></button> <button class="inline-flex items-center justify-center w-6 max-sm:w-5 h-7 max-sm:h-7 disabled:pointer-events-none text-sm text-gray-500 hover:text-gray-700 dark:hover:text-white rounded-r-md max-sm:rounded-r-sm border border-l transition border-gray-200 bg-white hover:shadow-inner dark:border-gray-850 dark:bg-gray-950 dark:text-gray-200 dark:hover:bg-gray-800" aria-haspopup="menu" aria-expanded="false" aria-label="Open copy menu"><svg class="transition-transform text-gray-400 overflow-visible sm:size-3.5 size-3 rotate-0" width="1em" height="1em" viewBox="0 0 12 7" fill="none" xmlns="http://www.w3.org/2000/svg"><path d="M1 1L6 6L11 1" stroke="currentColor"></path></svg><!----></button></div> <!--[-1--><!--]--></div><!----> <!--[0--><h1 class="relative group"><a id="coming-from-diffusionpipeline" class="header-link block pr-1.5 text-lg no-hover:hidden with-hover:absolute with-hover:p-1.5 with-hover:opacity-0 with-hover:group-hover:opacity-100 with-hover:right-full" href="#coming-from-diffusionpipeline"><span><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 256"><path d="M167.594 88.393a8.001 8.001 0 0 1 0 11.314l-67.882 67.882a8 8 0 1 1-11.314-11.315l67.882-67.881a8.003 8.003 0 0 1 11.314 0zm-28.287 84.86l-28.284 28.284a40 40 0 0 1-56.567-56.567l28.284-28.284a8 8 0 0 0-11.315-11.315l-28.284 28.284a56 56 0 0 0 79.196 79.197l28.285-28.285a8 8 0 1 0-11.315-11.314zM212.852 43.14a56.002 56.002 0 0 0-79.196 0l-28.284 28.284a8 8 0 1 0 11.314 11.314l28.284-28.284a40 40 0 0 1 56.568 56.567l-28.285 28.285a8 8 0 0 0 11.315 11.314l28.284-28.284a56.065 56.065 0 0 0 0-79.196z" fill="currentColor"></path></svg><!----></span></a> <span><!---->来自 DiffusionPipeline<!----></span></h1><!--]--><!----> <p>如果您熟悉 <a href="/docs/diffusers/v0.43.0/zh/api/pipelines/overview#diffusers.DiffusionPipeline">DiffusionPipeline</a>，并且是第一次使用 <a href="/docs/diffusers/v0.43.0/zh/api/modular_diffusers/pipeline#diffusers.ModularPipeline">ModularPipeline</a>，那么有一些地方的工作方式有所不同。以下列出了这些差异，以便您在开始 <a href="./quickstart">快速入门</a> 之前心中有数。</p> <ul><li><strong>加载是惰性的且灵活的。</strong> <a href="/docs/diffusers/v0.43.0/zh/api/modular_diffusers/pipeline#diffusers.ModularPipeline.from_pretrained">from_pretrained()</a> 根据仓库中的 <code>modular_model_index.json</code> 构建 pipeline，而不会加载任何权重。随后，<a href="/docs/diffusers/v0.43.0/zh/api/modular_diffusers/pipeline#diffusers.ModularPipeline.load_components">load_components()</a> 负责加载这些组件，且无需一次性全部加载：默认情况下它会加载所有组件，但你可以通过 <code>names</code> 仅加载指定的组件，或通过 <code>workflow</code> 加载某个工作流所需的组件集合。<a href="/docs/diffusers/v0.43.0/zh/api/modular_diffusers/pipeline#diffusers.ModularPipeline.update_components">update_components()</a> 允许你复用已有的组件，或使用与仓库规范不同的组件。请参阅 <a href="./modular_pipeline#loading-components">加载组件</a> 和 <a href="./modular_pipeline#updating-components">更新组件</a>。</li> <li><strong><a href="/docs/diffusers/v0.43.0/zh/api/modular_diffusers/pipeline#diffusers.ModularPipeline">ModularPipeline</a> 读取的是另一个索引文件 <code>modular_model_index.json</code></strong>，但只要模型具有模块化流水线，它同样适用于仅包含 <code>model_index.json</code> 的仓库。反之则不成立：<a href="/docs/diffusers/v0.43.0/zh/api/pipelines/overview#diffusers.DiffusionPipeline">DiffusionPipeline</a> 和 <code>AutoPipeline</code> 类无法处理仅包含 <code>modular_model_index.json</code> 的仓库。</li> <li><strong>调用会返回 pipeline 状态</strong>，其中也包含中间值（<code>prompt_embeds</code>、<code>latents</code> 等）。使用 <code>output</code> 参数指定所需内容，例如 <code>output="images"</code> 或 <code>output=["images", "latents"]</code>，或者像 <a href="./quickstart#run-a-pipeline">快速入门</a> 中那样读取状态的属性。参见 <a href="./modular_diffusers_states">States</a>。</li> <li><strong><code>guider</code> 组件支持 Classifier-free guidance</strong>，而非 <code>guidance_scale</code> 调用参数：<code>pipe.update_components(guider=ClassifierFreeGuidance(guidance_scale=5.0))</code>。请参阅 <a href="../using-diffusers/guiders">guiders 指南</a>。</li> <li><strong>没有 <code>callback_on_step_end</code></strong>；不过，你可以在去噪循环中插入一个代码块，以使用现有的回调函数。请参阅回调指南中的 <a href="../using-diffusers/callback#modular-pipelines">模块化流水线</a>。</li> <li><strong>该流水线是一个由块组成的图</strong>，您可以在使用 <a href="/docs/diffusers/v0.43.0/zh/api/modular_diffusers/pipeline_blocks#diffusers.ModularPipelineBlocks.init_pipeline">init_pipeline()</a> 构建之前对其进行修改（弹出、插入、替换）；<code>pipe.blocks</code> 返回的是副本，因此请先编辑块。参见 <a href="./quickstart#compose-new-workflows">组合新的工作流</a>。</li> <li><strong>卸载由 <a href="/docs/diffusers/v0.43.0/zh/api/modular_diffusers/pipeline_components#diffusers.ComponentsManager">ComponentsManager</a> 处理</strong>，它可以为共享组件的多个流水线提供服务。请参阅 <a href="./components_manager#offloading">ComponentsManager 指南</a>。</li></ul> <a class="!text-gray-400 !no-underline text-sm flex items-center not-prose mt-4" href="https://github.com/huggingface/diffusers/blob/main/docs/source/en/modular_diffusers/coming_from_diffusion_pipeline.md" target="_blank"><svg class="mr-1" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" fill="currentColor" focusable="false" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 32 32"><path d="M31,16l-7,7l-1.41-1.41L28.17,16l-5.58-5.59L24,9l7,7z"></path><path d="M1,16l7-7l1.41,1.41L3.83,16l5.58,5.59L8,23l-7-7z"></path><path d="M12.419,25.484L17.639,6.552l1.932,0.518L14.351,26.002z"></path></svg><!----> <span><span class="underline">Update</span> on GitHub</span></a><!----> 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