I try to receive a stream data from my host 127.0.0.1 port 23456 and send the data at my GUI in
listiew so long as I do not want that GUI freeze, I use 2 threads, but I am not so much of an expert in Python.
This is my code:
import tkinter as tk
from tkinter import ttk
import socket
import threading
def cell_selected(event):
selected_item = tree.selection()[0]
item_values = tree.item(selected_item, 'values')
print("Selected item:", item_values)
def connect_action():
threading.Thread(target=receive_data).start()
def exit_program():
root.quit()
def handle_received_data(data_list):
if data_list:
tree.item(tree.get_children()[1], values=data_list)
def receive_data():
host = "127.0.0.1"
port = 23456
with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
s.bind((host, port))
s.listen()
print(f"In ascolto su {host}:{port}")
try:
conn, addr = s.accept()
with conn:
print(f"Connesso da {addr}")
while True:
data = conn.recv(1024)
if not data:
break
data_str = data.decode("utf-8")
data_list = data_str.split(",")
root.after(0, handle_received_data, data_list)
except socket.error as e:
print("Errore nella connessione:", e)
def update_table(event):
data_list = event.data
if data_list:
tree.item(tree.get_children()[1], values=data_list)
root = tk.Tk()
root.title("Spreadsheet App")
notebook = ttk.Notebook(root)
notebook.pack(fill="both", expand=True)
tab1 = ttk.Frame(notebook)
notebook.add(tab1, text="Terminal")
columns = ("Order","TimeOp","Type","Size","Symbol","Price","S/L","T/P",
"Price","Com.","Swap","Profit","Comment","Close")
tree = ttk.Treeview(tab1, columns=columns, show="headings")
for col in columns:
tree.heading(col, text=col)
tree.bind("<ButtonRelease-1>", cell_selected)
tree.pack(padx=10, pady=10)
connect_button = tk.Button(root, text="Connetti", command=connect_action)
connect_button.pack(side="right", padx=10, pady=5)
tab2 = ttk.Frame(notebook)
notebook.add(tab2, text="Storico")
tree2 = ttk.Treeview(tab2, columns=("Symbol","Price","S/L"), show="headings")
tree2.bind("<ButtonRelease-1>", cell_selected)
tree2.pack(padx=10, pady=10)
exit_button = tk.Button(root, text="Esci", command=exit_program)
exit_button.pack(side="right", pady=5)
class CustomEvent:
def __init__(self, data):
self.data = data
def generate_custom_event(data):
event = CustomEvent(data)
root.event_generate("<<DataReceived>>", data=event)
root.bind("<<DataReceived>>", update_table)
root.mainloop()
What I have tried:
It returns me this error:
In ascolto su 127.0.0.1:23456
Connesso da ('127.0.0.1', 49967)
Exception in Tkinter callback
Traceback (most recent call last):
File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.11_3.11.1520.0_x64__qbz5n2kfra8p0\Lib\tkinter\__init__.py", line 1948, in __call__
return self.func(*args)
^^^^^^^^^^^^^^^^
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