Raiplay downloader

# www.stranck.ovh

import youtube_dl
import requests
from guizero import App, Text, TextBox, PushButton
from threading import Thread

app = App(title="raiplay downloader", height=100)
text = Text(app, text="Inserisci link del video su raiplay!")
wpTBox = TextBox(app, width="fill")
ready = True

class DwnThread (Thread):
    def __init__(self, wpLink):
        Thread.__init__(self)
        self.wpLink = wpLink

    def run(self):
        try:
            wpLink = self.wpLink
            print("Ottenendo link m3u8... ", end="")
            text.value = "Ottenendo link m3u8..."

            jsonLink = wpLink.replace("html", "json")
            json = requests.get(jsonLink).json()
            m3u8Link = json["video"]["content_url"]

            print(m3u8Link, "Scaricando il video nella directory corrente", sep="\n")
            text.value = "Scaricando il video nella directory corrente..."
            options = {
                'format':   'best',
                'outtmpl':  remove_chars(json["episode_title"], "*.\"\\/[]:;|,<>?") + ".mp4"
            }
            with youtube_dl.YoutubeDL(options) as ydl:
                ydl.download([m3u8Link])
            print("Scaricato!")
            text.value = "Scaricato! Inserisci un altro link di raiplay"
        except Exception as e:
            print(e)
            text.value = "Si è verificato un errore!"
        wpTBox.value = ""
        global ready
        ready = True

def remove_chars(input_string, removable):
    return ''.join([_ for _ in input_string if _ not in removable])

def download():
    global ready
    if(ready):
        ready = False #nice race condition
        dwn = DwnThread(wpTBox.value)
        dwn.start()

PushButton(app, text="Scarica!", command=download)
app.display()