Introducing Gradio Clients


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


Creates a numeric field for user to enter numbers as input or display numeric output.


As input component: Passes field value as a float or int into the function, depending on precision.

Your function should accept one of these types:
def predict(
	value: float | int | None

As output component: Expects an int or float returned from the function and sets field value to it.

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




Class Interface String Shortcut Initialization



Uses default values


import gradio as gr def tax_calculator(income, marital_status, assets): tax_brackets = [(10, 0), (25, 8), (60, 12), (120, 20), (250, 30)] total_deductible = sum(assets["Cost"]) taxable_income = income - total_deductible total_tax = 0 for bracket, rate in tax_brackets: if taxable_income > bracket: total_tax += (taxable_income - bracket) * rate / 100 if marital_status == "Married": total_tax *= 0.75 elif marital_status == "Divorced": total_tax *= 0.8 return round(total_tax) demo = gr.Interface( tax_calculator, [ "number", gr.Radio(["Single", "Married", "Divorced"]), gr.Dataframe( headers=["Item", "Cost"], datatype=["str", "number"], label="Assets Purchased this Year", ), ], "number", examples=[ [10000, "Married", [["Suit", 5000], ["Laptop", 800], ["Car", 1800]]], [80000, "Single", [["Suit", 800], ["Watch", 1800], ["Car", 800]]], ], ) 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 Number component supports the following event listeners. Each event listener takes the same parameters, which are listed in the Event Parameters table below.

Listener Description

Number.change(fn, ยทยทยท)

Triggered when the value of the Number 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.

Number.input(fn, ยทยทยท)

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

Number.submit(fn, ยทยทยท)

This listener is triggered when the user presses the Enter key while the Number is focused.

Number.focus(fn, ยทยทยท)

This listener is triggered when the Number is focused.

Event Parameters