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	<meta charset="utf-8" /><meta name="hf:doc:metadata" content="{"title":"顺序管道块","local":"顺序管道块","sections":[],"depth":1}">
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	<link rel="modulepreload" href="/docs/diffusers/pr_12242/zh/_app/immutable/chunks/HfOption.d50154c3.js"><!-- HEAD_svelte-u9bgzb_START --><meta name="hf:doc:metadata" content="{"title":"顺序管道块","local":"顺序管道块","sections":[],"depth":1}"><!-- HEAD_svelte-u9bgzb_END --> <p></p> <h1 class="relative group"><a id="顺序管道块" 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="#顺序管道块"><span><svg class="" 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>顺序管道块</span></h1> <p data-svelte-h="svelte-14yok8a"><code>SequentialPipelineBlocks</code> 是一种多块类型，它将其他 <code>ModularPipelineBlocks</code> 按顺序组合在一起。数据通过 <code>intermediate_inputs</code> 和 <code>intermediate_outputs</code> 线性地从一个块流向下一个块。<code>SequentialPipelineBlocks</code> 中的每个块通常代表管道中的一个步骤，通过组合它们，您逐步构建一个管道。</p> <p data-svelte-h="svelte-djrbc9">本指南向您展示如何将两个块连接成一个 <code>SequentialPipelineBlocks</code>。</p> <p data-svelte-h="svelte-hr24ox">创建两个 <code>ModularPipelineBlocks</code>。第一个块 <code>InputBlock</code> 输出一个 <code>batch_size</code> 值，第二个块 <code>ImageEncoderBlock</code> 使用 <code>batch_size</code> 作为 <code>intermediate_inputs</code>。</p> <div class="flex space-x-2 items-center my-1.5 mr-8 h-7 !pl-0 -mx-3 md:mx-0"><div class="flex items-center border rounded-lg px-1.5 py-1 leading-none select-none text-smd border-gray-800 bg-black dark:bg-gray-700 text-white">InputBlock </div><div class="flex items-center border rounded-lg px-1.5 py-1 leading-none select-none text-smd text-gray-500 cursor-pointer opacity-90 hover:text-gray-700 dark:hover:text-gray-200 hover:shadow-sm">ImageEncoderBlock </div></div> <div class="language-select"><div class="code-block relative "><div class="absolute top-2.5 right-4"><button class="inline-flex items-center relative text-sm focus:text-green-500 cursor-pointer focus:outline-none transition duration-200 ease-in-out opacity-0 mx-0.5 text-gray-600 " title="code excerpt" type="button"><svg class="" 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> <div class="absolute pointer-events-none transition-opacity bg-black text-white py-1 px-2 leading-tight rounded font-normal shadow left-1/2 top-full transform -translate-x-1/2 translate-y-2 opacity-0"><div class="absolute bottom-full left-1/2 transform -translate-x-1/2 w-0 h-0 border-black border-4 border-t-0" style="border-left-color: transparent; border-right-color: transparent; "></div> Copied</div></button></div> <pre class=""><!-- HTML_TAG_START --><span class="hljs-keyword">from</span> diffusers.modular_pipelines <span class="hljs-keyword">import</span> ModularPipelineBlocks, InputParam, OutputParam

	<span class="hljs-keyword">class</span> <span class="hljs-title class_">InputBlock</span>(<span class="hljs-title class_ inherited__">ModularPipelineBlocks</span>):

	<span class="hljs-meta"> @property</span>
	<span class="hljs-keyword">def</span> <span class="hljs-title function_">inputs</span>(<span class="hljs-params">self</span>):
	<span class="hljs-keyword">return</span> [
	InputParam(name=<span class="hljs-string">"prompt"</span>, type_hint=<span class="hljs-built_in">list</span>, description=<span class="hljs-string">"list of text prompts"</span>),
	InputParam(name=<span class="hljs-string">"num_images_per_prompt"</span>, type_hint=<span class="hljs-built_in">int</span>, description=<span class="hljs-string">"number of images per prompt"</span>),
	]

	<span class="hljs-meta"> @property</span>
	<span class="hljs-keyword">def</span> <span class="hljs-title function_">intermediate_outputs</span>(<span class="hljs-params">self</span>):
	<span class="hljs-keyword">return</span> [
	OutputParam(name=<span class="hljs-string">"batch_size"</span>, description=<span class="hljs-string">"calculated batch size"</span>),
	]

	<span class="hljs-meta"> @property</span>
	<span class="hljs-keyword">def</span> <span class="hljs-title function_">description</span>(<span class="hljs-params">self</span>):
	<span class="hljs-keyword">return</span> <span class="hljs-string">"A block that determines batch_size based on the number of prompts and num_images_per_prompt argument."</span>

	<span class="hljs-keyword">def</span> <span class="hljs-title function_">__call__</span>(<span class="hljs-params">self, components, state</span>):
	block_state = self.get_block_state(state)
	batch_size = <span class="hljs-built_in">len</span>(block_state.prompt)
	block_state.batch_size = batch_size * block_state.num_images_per_prompt
	self.set_block_state(state, block_state)
	<span class="hljs-keyword">return</span> components, state<!-- HTML_TAG_END --></pre></div> </div> <p data-svelte-h="svelte-77kwcm">通过定义一个<code>InsertableDict</code>来连接两个块，将块名称映射到块实例。块按照它们在<code>blocks_dict</code>中注册的顺序执行。</p> <p data-svelte-h="svelte-1o0hkrv">使用<code>from_blocks_dict()</code>来创建一个<code>SequentialPipelineBlocks</code>。</p> <div class="code-block relative "><div class="absolute top-2.5 right-4"><button class="inline-flex items-center relative text-sm focus:text-green-500 cursor-pointer focus:outline-none transition duration-200 ease-in-out opacity-0 mx-0.5 text-gray-600 " title="code excerpt" type="button"><svg class="" 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> <div class="absolute pointer-events-none transition-opacity bg-black text-white py-1 px-2 leading-tight rounded font-normal shadow left-1/2 top-full transform -translate-x-1/2 translate-y-2 opacity-0"><div class="absolute bottom-full left-1/2 transform -translate-x-1/2 w-0 h-0 border-black border-4 border-t-0" style="border-left-color: transparent; border-right-color: transparent; "></div> Copied</div></button></div> <pre class=""><!-- HTML_TAG_START --><span class="hljs-keyword">from</span> diffusers.modular_pipelines <span class="hljs-keyword">import</span> SequentialPipelineBlocks, InsertableDict

	blocks_dict = InsertableDict()
	blocks_dict[<span class="hljs-string">"input"</span>] = input_block
	blocks_dict[<span class="hljs-string">"image_encoder"</span>] = image_encoder_block

	blocks = SequentialPipelineBlocks.from_blocks_dict(blocks_dict)<!-- HTML_TAG_END --></pre></div> <p data-svelte-h="svelte-1r6xy17">通过调用<code>blocks</code>来检查<code>SequentialPipelineBlocks</code>中的子块，要获取更多关于输入和输出的详细信息，可以访问<code>docs</code>属性。</p> <div class="code-block relative "><div class="absolute top-2.5 right-4"><button class="inline-flex items-center relative text-sm focus:text-green-500 cursor-pointer focus:outline-none transition duration-200 ease-in-out opacity-0 mx-0.5 text-gray-600 " title="code excerpt" type="button"><svg class="" 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> <div class="absolute pointer-events-none transition-opacity bg-black text-white py-1 px-2 leading-tight rounded font-normal shadow left-1/2 top-full transform -translate-x-1/2 translate-y-2 opacity-0"><div class="absolute bottom-full left-1/2 transform -translate-x-1/2 w-0 h-0 border-black border-4 border-t-0" style="border-left-color: transparent; border-right-color: transparent; "></div> Copied</div></button></div> <pre class=""><!-- HTML_TAG_START --><span class="hljs-built_in">print</span>(blocks)
	<span class="hljs-built_in">print</span>(blocks.doc)<!-- HTML_TAG_END --></pre></div> <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/zh/modular_diffusers/sequential_pipeline_blocks.md" target="_blank"><span data-svelte-h="svelte-1kd6by1"><</span> <span data-svelte-h="svelte-x0xyl0">></span> <span data-svelte-h="svelte-1dajgef"><span class="underline ml-1.5">Update</span> on GitHub</span></a> <p></p>

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