tkinter - Printable Version +- Python Forum (https://python-forum.io) +-- Forum: Python Coding (https://python-forum.io/forum-7.html) +--- Forum: GUI (https://python-forum.io/forum-10.html) +--- Thread: tkinter (/thread-23630.html) |
tkinter - guilla25 - Jan-09-2020 Hi I want to display a value which is updated every second. I receive data via an HTTP post every second I try to use tkinter, by putting my program in the do_POST but the loop of tkinter doesn't allow to read next value via HTTP I don't know how to display this value (tata in my program)!! somebody can help me ? thanks in advance for your support regards seb #!/usr/bin/env python3 """ Very simple HTTP server in python for logging requests Usage:: ./server.py [<port>] """ from http.server import BaseHTTPRequestHandler, HTTPServer import logging import json from tkinter import * class S(BaseHTTPRequestHandler): def _set_response(self): self.send_response(200) self.send_header('Content-type', 'text/html') self.end_headers() def do_GET(self): logging.info("GET request,\nPath: %s\nHeaders:\n%s\n", str(self.path), str(self.headers)) self._set_response() self.wfile.write("GET request for {}".format(self.path).encode('utf-8')) def do_POST(self): content_length = int(self.headers['Content-Length']) # <--- Gets the size of data post_data = self.rfile.read(content_length) # <--- Gets the data itself print(post_data) #print(type(post_data)) # Decode UTF-8 bytes to Unicode, and convert single quotes # to double quotes to make it valid JSON my_json = post_data.decode('utf8').replace("'", '"') # Load the JSON to a Python list & dump it back out as formatted JSON titi = json.loads(my_json) #s = json.dumps(data, indent=4, sort_keys=True) #print(titi) #print(type(titi)) toto = titi["eulers"] #print(toto) #print(type(toto)) premier = toto[0] print( premier["yawLeftForearm"]) tata = premier["yawLeftForearm"] def maj(): # on arrive ici toutes les 1000 ms #heure = str(random.randint(0, 10)) donnees.set(str(tata)) Mafenetre.after(1000,maj) Mafenetre = Tk() Mafenetre.title("Heure courante") # Creation d'un widget Label donnees = StringVar() Label(Mafenetre,textvariable=donnees).pack(padx=10,pady=10) maj() Mafenetre.mainloop() #print(premier) #print(type(premier)) logging.info("POST request,\nPath: %s\nHeaders:\n%s\n\nBody:\n%s\n", str(self.path), str(self.headers), post_data.decode('utf-8')) self._set_response() self.wfile.write("POST request for {}".format(self.path).encode('utf-8')) def run(server_class=HTTPServer, handler_class=S, port=8086): logging.basicConfig(level=logging.INFO) server_address = ('192.168.0.12', port) httpd = server_class(server_address, handler_class) logging.info('Starting httpd...\n') try: httpd.serve_forever() except KeyboardInterrupt: pass httpd.server_close() logging.info('Stopping httpd...\n') if __name__ == '__main__': from sys import argv if len(argv) == 2: run(port=int(argv[1])) else: run() RE: tkinter - Larz60+ - Jan-09-2020 without digging into your code, I provide a simple polling example: import tkinter as tk class Polling: def __init__(self, parent): self.parent = parent self.parent.geometry('100x100+10+10') self.txt = tk.Text(parent) self.txt.pack(fill=tk.BOTH) self.toggle = True def myevent(self): # Note from Larz60+ # you can add your own code here. # I'll just print message for simplicity if self.toggle: self.txt.insert(tk.END, 'tick\n') self.toggle = False else: self.txt.insert(tk.END, 'tock\n') self.toggle = True def poller(self): self.myevent() self.txt.after(2000, self.poller) # 2 seconds def main(): root = tk.Tk() poll = Polling(root) poll.poller() root.mainloop() if __name__ == '__main__': main() RE: tkinter - guilla25 - Jan-10-2020 Hello thanks for your answer, actually it is my main problem, I have no idea how to insert the display part in my do_POST() !! thanks in advance regards RE: tkinter - Larz60+ - Jan-10-2020 I do show a display example in the myevent method, which uses a Text widget Run the code, it just displays a simple tick tock every two seconds (slow ticker) |