ソケット通信

ソケット通信

https://pc-karuma.net/windows-10-firewall-open-port/
https://memo.saitodev.com/home/python_network_programing/#id3

UDP

送信側

from __future__ import print_function
import socket
import time
from contextlib import closing

def main():
  host = 'XXX.XXX.XXX.XXX' #受信側のipv4
  port = 4000
  count = 0
  sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
  with closing(sock):
    while True:
      message = 'Hello world : {0}'.format(count).encode('utf-8')
      print(message)
      sock.sendto(message, (host, port))
      count += 1
      
  return

if __name__ == '__main__':
  main()

受信側

from __future__ import print_function
import socket
from contextlib import closing

def main():
  host = 'XXX.XXX.XXX.XXX'  #受信側のipv4
  port = 4000
  bufsize = 4096

  sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
  with closing(sock):
    sock.bind((host, port))
    while True:
      print(sock.recv(bufsize))
  return

if __name__ == '__main__':
  main()

変換re

b = "b'19929717,168780'"
import re
regex = re.compile('\d+')
match = regex.findall(b)
print(match) #['19929717', '168780']
int(match[0]), int(match[1]) # (19929717, 168780)

動的更新

# !/usr/bin/env python
# -*- coding: utf8 -*-
import tkinter as tk
import random
def read_current_Temperature():
    return random.randint(1, 100)
def update():
    aktTemp.config(text=str(read_current_Temperature())+"°C")
    aktTemp.after(1000, update)
HEIGHT = 300
WIDTH = 500
root = tk.Tk()
canvas = tk.Canvas(root, height = HEIGHT, width = WIDTH)
canvas.pack()
aktTemp = tk.Label(root, text=str(read_current_Temperature())+"°C", fg="red") 
aktTemp.pack()
update()
root.mainloop()