app.py

import gradio as gr
import pandas as pd
import numpy as np
import matplotlib.pyplot as plt


def plot_graph(file):
    df = pd.read_csv(file.name, low_memory=False, encoding='UTF-8')

    x = np.ravel(df["x"]).tolist()
    y = np.ravel(df["y"]).tolist()
    
    fig, ax = plt.subplots(figsize=(12,6), dpi=72)


    ax.plot(x, y)
    
    plt.xticks(fontsize=10, rotation=-90)
    plt.yticks(fontsize=10)
    plt.ylim(bottom=0)

    plt.tight_layout()
    
    ax.set_axisbelow(True)
    plt.grid(True)
    
    plot_filename = 'graph.png'
    plt.savefig(plot_filename)
    plt.close()
    
    return plot_filename


examples = [
    ["sample.csv"],
]

interface = gr.Interface(
    fn=plot_graph,
    inputs=gr.File(label="Upload CSV File"),
    outputs=gr.Image(type="filepath", label="Generated Graph"),
    title="Sandbox Matplotlib",
    examples=examples
)

interface.launch()