Introducing Gradio Clients


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import gradio as gr with gr.Blocks() as demo: gr.Slider() demo.launch()


Creates a slider that ranges from minimum to maximum with a step size of step.


As input component: Passes slider value as a float into the function.

Your function should accept one of these types:
def predict(
	value: float

As output component: Expects an int or float returned from function and sets slider value to it as long as it is within range (otherwise, sets to minimum value).

Your function should return one of these types:
def predict(ยทยทยท) -> float | None
	return value




Class Interface String Shortcut Initialization



Uses default values


import gradio as gr def sentence_builder(quantity, animal, countries, place, activity_list, morning): return f"""The {quantity} {animal}s from {" and ".join(countries)} went to the {place} where they {" and ".join(activity_list)} until the {"morning" if morning else "night"}""" demo = gr.Interface( sentence_builder, [ gr.Slider(2, 20, value=4, label="Count", info="Choose between 2 and 20"), gr.Dropdown( ["cat", "dog", "bird"], label="Animal", info="Will add more animals later!" ), gr.CheckboxGroup(["USA", "Japan", "Pakistan"], label="Countries", info="Where are they from?"), gr.Radio(["park", "zoo", "road"], label="Location", info="Where did they go?"), gr.Dropdown( ["ran", "swam", "ate", "slept"], value=["swam", "slept"], multiselect=True, label="Activity", info="Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed auctor, nisl eget ultricies aliquam, nunc nisl aliquet nunc, eget aliquam nisl nunc vel nisl." ), gr.Checkbox(label="Morning", info="Did they do it in the morning?"), ], "text", examples=[ [2, "cat", ["Japan", "Pakistan"], "park", ["ate", "swam"], True], [4, "dog", ["Japan"], "zoo", ["ate", "swam"], False], [10, "bird", ["USA", "Pakistan"], "road", ["ran"], False], [8, "cat", ["Pakistan"], "zoo", ["ate"], True], ] ) if __name__ == "__main__": demo.launch()

Event Listeners


Event listeners allow you to respond to user interactions with the UI components you've defined in a Gradio Blocks app. When a user interacts with an element, such as changing a slider value or uploading an image, a function is called.

Supported Event Listeners

The Slider component supports the following event listeners. Each event listener takes the same parameters, which are listed in the Event Parameters table below.

Listener Description

Slider.change(fn, ยทยทยท)

Triggered when the value of the Slider changes either because of user input (e.g. a user types in a textbox) OR because of a function update (e.g. an image receives a value from the output of an event trigger). See .input() for a listener that is only triggered by user input.

Slider.input(fn, ยทยทยท)

This listener is triggered when the user changes the value of the Slider.

Slider.release(fn, ยทยทยท)

This listener is triggered when the user releases the mouse on this Slider.

Event Parameters