gradio/readme_files/zh-cn
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Version 4 development branch (#5498)
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This reverts commit 94f43859e7.

* Improve Audio Component (#5966)

* replace <audio> with wavesurfer: add recording, playing and trimming, playback

* add changeset

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* update pnpm lock

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* fix no microphone found logic

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* tweaks

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* fix audio file name test

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* Fix changesets 2 (#6116)

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* v4

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* Gradio custom component publish (#6098)

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* Refactor `Blocks.load()` so that it is in the same style as the other listeners (#6126)

* restore decorator

* remove

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* Image v4 (#6094)

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* more

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* fix client build

* fix linting

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* Fix fallback demo app template code (#6129)

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* fix video path

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* make lite private (#6147)

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* fix dropdown arrow size (#6148)

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* swap `mode` on the frontned to `interactive` to match the backend (#6149)

* JS READMEs and Storybook on Docs (#6142)

* changes

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* Don't serve files in working directory by default (#6128)

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* guide

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* Fix issues with website deploy (#6151)

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* Swap websockets for SSE (#6069)

* changes

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* merge

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* Remove duplicate `elem_ids` from components (#6152)

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* Moves `gradio_cached_folder` inside the gradio temp direcotry (#6155)

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* Remove interpretation for good (#6154)

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* JS Component Documentation (#6136)

* Simple template

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* Properly handle change event video

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* atoms doc

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* Some more components

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* Simple template

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* add changeset

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* Lint

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* Lockfile

* Fix

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2023-10-31 04:46:02 +00:00
..
README.md Version 4 development branch (#5498) 2023-10-31 04:46:02 +00:00

gradio
轻松构建 & 分享 令人愉快的机器学习程序

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官网 | 文档 | 指南 | 开始] | 样例 | English

Gradio: 用Python构建机器学习网页APP

Gradio是一个开源的Python库用于构建演示机器学习或数据科学以及web应用程序。

使用Gradio您可以基于您的机器学习模型或数据科学工作流快速创建一个漂亮的用户界面让用户可以”尝试“拖放他们自己的图像、粘贴文本、录制他们自己的声音并通过浏览器与您的演示程序进行交互。

Interface montage

Gradio适用于:

  • 向客户/合伙人/用户/学生演示您的机器学习模型。

  • 通过自动共享链接快速部署您的模型,并获得模型性能反馈。

  • 在开发过程中使用内置的操作和解释工具交互式地调试模型。

快速开始

依赖: Gradio只需要Python 3.7及以上版本!

Gradio能做什么

与他人共享机器学习模型、API或数据科学工作流程的最佳方法之一就是创建一个交互式应用,让用户或同事在他们的浏览器中试用。

Gradio让你可以用Python构建演示并分享它们,而且通常只需几行代码!下面让我们开始吧。

Hello, World

要用Gradio运行"Hello World"示例,需要以下三个步骤:

1. 用pip下载Gradio:

pip install gradio

2. 用Python脚本或在Jupyter Notebook中运行下面的代码 (或者使用 Google Colab:

import gradio as gr

def greet(name):
    return "Hello " + name + "!"

demo = gr.Interface(fn=greet, inputs="text", outputs="text")
demo.launch()

3. 下面的演示会自动出现在Jupyter Notebook中如果使用脚本运行则会在浏览器http://localhost:7860弹出:

hello_world demo

Interface

你可能会注意到,在运行示例时我们创建了一个 gradio.InterfaceInterface 类可以用用户接口包装任意的Python函数。在上面的示例中我们使用了一个基于文本的简单函数但这个函数可以是任何东西从音乐生成器到税率计算器再到预训练机器学习模型的预测函数。

Interface 类核心需要三个参数初始化:

  • fn : 被UI包装的函数
  • inputs : 作为输入的组件 (例如: "text", "image" or "audio")
  • outputs : 作为输出的组件 (例如: "text", "image" or "label")

下面我们进一步分析用于输入和输出的组件。

组件属性

在之前的示例中我们可以看到一些简单的文本框组件 Textbox 但是如果您想改变UI组件的外观或行为呢?

假设您想要自定义输入文本字段,例如您希望它更大并有一个文本占位符。如果我们使用 Textbox 的实际类,而不是使用字符串快捷方式,就可以通过组件属性实现个性化。

import gradio as gr

def greet(name):
    return "Hello " + name + "!"

demo = gr.Interface(
    fn=greet,
    inputs=gr.Textbox(lines=2, placeholder="Name Here..."),
    outputs="text",
)
demo.launch()

hello_world_2 demo

多输入和输出组件

假设您有一个更复杂的函数,有多个输入和输出。在下面的示例中,我们定义了一个函数,该函数接受字符串、布尔值和数字,并返回字符串和数字。观察应该如何传递输入和输出组件列表。

import gradio as gr

def greet(name, is_morning, temperature):
    salutation = "Good morning" if is_morning else "Good evening"
    greeting = f"{salutation} {name}. It is {temperature} degrees today"
    celsius = (temperature - 32) * 5 / 9
    return greeting, round(celsius, 2)

demo = gr.Interface(
    fn=greet,
    inputs=["text", "checkbox", gr.Slider(0, 100)],
    outputs=["text", "number"],
)
demo.launch()

hello_world_3 demo

您只需将组件包装在列表中。输入列表inputs中的每个组件依次对应函数的一个参数。输出列表outputs中的每个组件都对应于函数的一个返回值,两者均按顺序对应。

一个图像示例

Gradio支持多种类型的组件ImageDateFrameVideoLabel 。让我们尝试一个图像到图像的函数来感受一下!

import numpy as np
import gradio as gr

def sepia(input_img):
    sepia_filter = np.array([
        [0.393, 0.769, 0.189],
        [0.349, 0.686, 0.168],
        [0.272, 0.534, 0.131]
    ])
    sepia_img = input_img.dot(sepia_filter.T)
    sepia_img /= sepia_img.max()
    return sepia_img

demo = gr.Interface(sepia, gr.Image(shape=(200, 200)), "image")
demo.launch()

sepia_filter demo

当使用Image组件作为输入时,您的函数将接收一个形状为 (height, width, 3) 的NumPy数组其中最后一个维度表示RGB值。我们还将以NumPy数组的形式返回一张图像。

你也可以用 type= 关键字参数设置组件使用的数据类型。例如如果你想让你的函数获取一个图像的文件路径而不是一个NumPy数组时输入 Image 组件可以写成:

gr.Image(type="filepath", shape=...)

还要注意,我们的输入 Image 组件带有一个编辑按钮 🖉,它允许裁剪和放大图像。以这种方式操作图像可以帮助揭示机器学习模型中的偏见或隐藏的缺陷!

您可以在Gradio文档中阅读更多关于组件以及如何使用它们。

Blocks: 更加灵活且可控

Gradio 提供了两个类来构建应用程序

1. Interface,这为创建到目前为止我们一直在讨论的示例提供了一个高级抽象。

2. Blocks一个用于设计具有更灵活布局和数据流的web应用程序的初级API。block可以做许多事比如特征化多个数据流和演示控制组件在页面上出现的位置处理复杂的数据流例如输出可以作为其他函数的输入以及根据用户交互更新组件的属性/可见性且仍然在Python中。如果您需要这种个性化那就试试 Blocks 吧!

你好, Blocks

让我们看一个简单的例子。注意这里的API与 Interface 有何不同。

import gradio as gr

def greet(name):
    return "Hello " + name + "!"

with gr.Blocks() as demo:
    name = gr.Textbox(label="Name")
    output = gr.Textbox(label="Output Box")
    greet_btn = gr.Button("Greet")
    greet_btn.click(fn=greet, inputs=name, outputs=output)

demo.launch()

hello_blocks demo

注意事项:

  • Blockswith 子句组成,在该子句中创建的任何组件都会自动添加到应用程序中。
  • 组件在应用程序中按创建的顺序垂直显示,(稍后我们将介绍自定义布局!)
  • 一个 按钮 Button 被创建,然后添加了一个 click 事件监听器。这个API看起来很熟悉就像 Interface一样, click 方法接受一个Python函数、输入组件和输出组件。

更多复杂性

这里有一个应用程序可以让你感受一下Blocks的更多可能:

import numpy as np
import gradio as gr

def flip_text(x):
    return x[::-1]

def flip_image(x):
    return np.fliplr(x)

with gr.Blocks() as demo:
    gr.Markdown("Flip text or image files using this demo.")
    with gr.Tabs():
        with gr.TabItem("Flip Text"):
            text_input = gr.Textbox()
            text_output = gr.Textbox()
            text_button = gr.Button("Flip")
        with gr.TabItem("Flip Image"):
            with gr.Row():
                image_input = gr.Image()
                image_output = gr.Image()
            image_button = gr.Button("Flip")

    text_button.click(flip_text, inputs=text_input, outputs=text_output)
    image_button.click(flip_image, inputs=image_input, outputs=image_output)

demo.launch()

blocks_flipper demo

还有很多事情可以做!我们将在使用blocks构建部分为您介绍如何创建像这样复杂的 Blocks 应用程序。

恭喜你你现在已经熟悉了Gradio的基础使用🥳 去我们的下一章 了解Gradio的更多功能。

开源栈

Gradio是由许多很棒的开源库构建的请一并支持它们!

huggingface python fastapi encode svelte vite pnpm tailwind

协议

Gradio is licensed under the Apache License 2.0 found in the LICENSE file in the root directory of this repository.

引用

另外请参阅论文 Gradio: Hassle-Free Sharing and Testing of ML Models in the Wild, ICML HILL 2019如果您在工作中使用Gradio请引用它。

@article{abid2019gradio,
  title = {Gradio: Hassle-Free Sharing and Testing of ML Models in the Wild},
  author = {Abid, Abubakar and Abdalla, Ali and Abid, Ali and Khan, Dawood and Alfozan, Abdulrahman and Zou, James},
  journal = {arXiv preprint arXiv:1906.02569},
  year = {2019},
}