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  1. import sys
  2. import socket
  3. import select
  4. from tkinter import *
  5.  
  6.  
  7. def chat_client():
  8.     # initialize GUI
  9.     window = Tk()
  10.     window.geometry("600x800")
  11.     window.title("Communicator")
  12.  
  13.     w = Canvas(window, width=580, height=450, bg="ivory2")
  14.     w.place(x=5, y=300)
  15.  
  16.     # whole conversation is stored here
  17.     conversation = Text(window, width=80, height=30, wrap=WORD)
  18.     conversation.place(x=10, y=310)
  19.     label_enter = Label(window, text="Enter message: ")
  20.     label_enter.place(x=5, y=20)
  21.  
  22.     # the message from here is being taken to send / write on std out
  23.     message_entry = Entry(window, width=30)
  24.     message_entry.place(x=120, y=20)
  25.  
  26.     msg = ""
  27.  
  28.     def say():
  29.         x = message_entry.get()
  30.         sys.stdout.write(x)
  31.         conversation.insert(0.0, x + '\n')
  32.         msg = message_entry.get().encode()
  33.         message_entry.delete(0, 'end')
  34.  
  35.  
  36.     btn_send = Button(window, text="Send!", command=say).place(x=120, y=50)
  37.  
  38.     #THIS SEEMS TO BE THE PROBLEM!!!
  39.     window.mainloop()
  40.     ######################
  41.  
  42.     host = 'localhost'
  43.     port = 8888
  44.  
  45.     s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
  46.     s.settimeout(2)
  47.  
  48.     # connect to remote host
  49.     try:
  50.         s.connect((host, port))
  51.  
  52.     except:
  53.         print('Unable to connect')
  54.         sys.exit()
  55.  
  56.     print('Connected to remote host. You can start sending messages')
  57.     #sys.stdout.write('[Me] ')
  58.     sys.stdout.flush()
  59.  
  60.     while 1:
  61.  
  62.         socket_list = [sys.stdin, s]
  63.  
  64.         # Get the list sockets which are readable
  65.         ready_to_read, ready_to_write, in_error = select.select(socket_list, [], [], 1)
  66.  
  67.         for sock in ready_to_read:
  68.             if sock == s:
  69.                 # incoming message from remote server, s
  70.                 data = sock.recv(4096)
  71.                 if not data:
  72.                     print('\nDisconnected from chat server')
  73.                     sys.exit()
  74.                 else:
  75.                     # print data
  76.                     sys.stdout.write(str(data))
  77.                     #conversation.insert(0.0, str(data) + '\n')
  78.                     sys.stdout.write('\n-> ');
  79.                     sys.stdout.flush()
  80.  
  81.             else:
  82.                 # user entered a message
  83.                 #msg = message_entry.get().encode() #sys.stdin.readline().encode()
  84.                 s.send(msg.encode())
  85.                 msg2 = sys.stdin.readline().encode()
  86.                 s.send(msg2)
  87.                 sys.stdout.write('\n-> ');
  88.                 sys.stdout.flush()
  89.                 message_entry.delete(0, 'end')
  90.  
  91.  
  92. if __name__ == "__main__":
  93.     sys.exit(chat_client())
Runtime error #stdin #stdout #stderr 0.02s 76224KB
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stdin
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Standard input is empty
stdout
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Standard output is empty
stderr
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Traceback (most recent call last):
  File "./prog.py", line 93, in <module>
  File "./prog.py", line 9, in chat_client
  File "/usr/lib/python3.5/tkinter/__init__.py", line 1880, in __init__
    self.tk = _tkinter.create(screenName, baseName, className, interactive, wantobjects, useTk, sync, use)
_tkinter.TclError: no display name and no $DISPLAY environment variable
https://ideone.com/qAbnwS
language:
Python 3 (python  3.12)
created:
7 years ago
visibility:
public

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