Components
Number

New to Gradio? Start here: Getting Started

To install Gradio from main, run the following command:

pip install https://gradio-builds.s3.amazonaws.com/02798ec170be7c9e8756dec24ef29c7f46fe2060/gradio-4.41.0-py3-none-any.whl

*Note: Setting share=True in launch() will not work.

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MultimodalTextbox

ParamViewer

→

Number

gradio.Number(···)

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

Description

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

Behavior

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(···) -> float | int | None
	...	
	return value

Initialization

Shortcuts

Class	Interface String Shortcut	Initialization
`gradio.Number`	"number"	Uses default values

Demos

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()

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()

import gradio as gr demo = gr.Blocks(css="""#btn {color: red} .abc {font-family: "Comic Sans MS", "Comic Sans", cursive !important}""") with demo: default_json = {"a": "a"} num = gr.State(value=0) squared = gr.Number(value=0) btn = gr.Button("Next Square", elem_id="btn", elem_classes=["abc", "def"]) stats = gr.State(value=default_json) table = gr.JSON() def increase(var, stats_history): var += 1 stats_history[str(var)] = var**2 return var, var**2, stats_history, stats_history btn.click(increase, [num, stats], [num, squared, stats, table]) if __name__ == "__main__": demo.launch()

import gradio as gr

demo = gr.Blocks(css="""#btn {color: red} .abc {font-family: "Comic Sans MS", "Comic Sans", cursive !important}""")

with demo:
    default_json = {"a": "a"}

    num = gr.State(value=0)
    squared = gr.Number(value=0)
    btn = gr.Button("Next Square", elem_id="btn", elem_classes=["abc", "def"])

    stats = gr.State(value=default_json)
    table = gr.JSON()

    def increase(var, stats_history):
        var += 1
        stats_history[str(var)] = var**2
        return var, var**2, stats_history, stats_history

    btn.click(increase, [num, stats], [num, squared, stats, table])

if __name__ == "__main__":
    demo.launch()

Event Listeners

Description

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, ···)`	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, ···)`	This listener is triggered when the user changes the value of the Number.
`Number.submit(fn, ···)`	This listener is triggered when the user presses the Enter key while the Number is focused.
`Number.focus(fn, ···)`	This listener is triggered when the Number is focused.

Event Parameters

←

MultimodalTextbox

ParamViewer

→

Number

Description

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

Behavior

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:

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:

Initialization

Shortcuts

Demos

Event Listeners

Description

Supported Event Listeners

Event Parameters

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

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