app.py

import gradio as gr
import json

def regions_list():
    with open('regions.json', 'r') as f:
        regions = json.load(f)
        reg_name = [(i['name_uz'], i['id']) for i in regions]
        reg_tuple = [tuple(reg_name[k]) for k in range(len(reg_name))]
        return reg_tuple

def district_list():
    with open('districts.json', 'r') as f:
        districts = json.load(f)
        dis_name = [(i['name_uz'], i['region_id']) for i in districts]
        dis_tuple = [tuple(dis_name[k]) for k in range(len(dis_name))]
        return dis_tuple

def get_district(reg_ch):
    newDList = [i for i in district_list() if i[1]==reg_ch]
    return dict(newDList)

with gr.Blocks() as iface: 
    gr.Markdown("""# Region lists""")
    with gr.Row():
        inp=gr.Dropdown(choices=regions_list(), label="Region")
        out=gr.Label(label='Tanlovlar')
    theme='gradio/seafoam'
    inp.change(fn=get_district, inputs=inp, outputs=out)

if __name__=="__main__":
    iface.launch(debug=True)