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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:
Python
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()

#Function to handle received data inside the the main thread
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(",")
                    
                    #Schedule GUI update in the main thread here...
                    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")

# Creazione del widget Notebook (schede)
notebook = ttk.Notebook(root)
notebook.pack(fill="both", expand=True)

# Primo tab con il primo Treeview
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)

# Pulsante "Connetti" a destra
connect_button = tk.Button(root, text="Connetti", command=connect_action)
connect_button.pack(side="right", padx=10, pady=5)

# Secondo tab con il secondo Treeview
tab2 = ttk.Frame(notebook)
notebook.add(tab2, text="Storico")

tree2 = ttk.Treeview(tab2, columns=("Symbol","Price","S/L"), show="headings")
# ... Aggiungi colonne e dati al secondo Treeview ...

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)  # Bind custom event

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)
           ^^^^^^^^^^^^^^^^
Posted
Updated 28-Aug-23 8:03am
v3
Comments
Richard MacCutchan 28-Aug-23 4:20am    
It is not clear which call has caused the exception. Was there more information in the stack trace?
GiulioRig 28-Aug-23 4:49am    
In ascolto su 127.0.0.1:23456
Connesso da ('127.0.0.1', 54769)
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)
^^^^^^^^^^^^^^^^
File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.11_3.11.1520.0_x64__qbz5n2kfra8p0\Lib\tkinter\__init__.py", line 861, in callit
func(*args)
File "C:\Users\pct\Desktop\python\tabella.py", line 20, in handle_received_data
tree.item(tree.get_children()[1], values=data_list)
~~~~~~~~~~~~~~~~~~~^^^
IndexError: tuple index out of range
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)
^^^^^^^^^^^^^^^^
File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.11_3.11.1520.0_x64__qbz5n2kfra8p0\Lib\tkinter\__init__.py", line 861, in callit
func(*args)
File "C:\Users\pct\Desktop\python\tabella.py", line 20, in handle_received_data
tree.item(tree.get_children()[1], values=data_list)
~~~~~~~~~~~~~~~~~~~^^^
IndexError: tuple index out of range
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)
^^^^^^^^^^^^^^^^
File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.11_3.11.1520.0_x64__qbz5n2kfra8p0\Lib\tkinter\__init__.py", line 861, in callit
func(*args)
File "C:\Users\pct\Desktop\python\tabella.py", line 20, in handle_received_data
tree.item(tree.get_children()[1], values=data_list)
~~~~~~~~~~~~~~~~~~~^^^
IndexError: tuple index out of range
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)
^^^^^^^^^^^^^^^^
File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.11_3.11.1520.0_x64__qbz5n2kfra8p0\Lib\tkinter\__init__.py", line 861, in callit
func(*args)
File "C:\Users\pct\Desktop\python\tabella.py", line 20, in handle_received_data
tree.item(tree.get_children()[1], values=data_list)
~~~~~~~~~~~~~~~~~~~^^^
IndexError: tuple index out of range
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)
^^^^^^^^^^^^^^^^
File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.11_3.11.1520.0_x64__qbz5n2kfra8p0\Lib\tkinter\__init__.py", line 861, in callit
func(*args)
File "C:\Users\pct\Desktop\python\tabella.py", line 20, in handle_received_data
tree.item(tree.get_children()[1], values=data_list)
~~~~~~~~~~~~~~~~~~~^^^
IndexError: tuple index out of range
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)
^^^^^^^^^^^^^^^^
File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.11_3.11.1520.0_x64__qbz5n2kfra8p0\Lib\tkinter\__init__.py", line 861, in callit
func(*args)
File "C:\Users\pct\Desktop\python\tabella.py", line 20, in handle_received_data
tree.item(tree.get_children()[1], values=data_list)
~~~~~~~~~~~~~~~~~~~^^^
IndexError: tuple index out of range
Exception in
Richard MacCutchan 28-Aug-23 5:02am    
The issue would appear to be caused by the code referred to in the following error message:
File "C:\Users\pct\Desktop\python\tabella.py", line 20, in handle_received_data
tree.item(tree.get_children()[1], values=data_list)
~~~~~~~~~~~~~~~~~~~^^^
IndexError: tuple index out of range

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