Python3でEntryにIPアドレスを入力しget()で取得してconnectする方法

前提・実現したいこと

pythonを使ってソケット通信のGUIチャットソフトを簡易的に作成しています。
別のシェルで「server.py」を起動し接続待ち状態で待機し、そこに「chat_client.py」から接続要求を送り接続するところまで行きたいう段階です。名前の送受信はまだ行えていないので無視してください。
よろしくお願いします。

発生している問題・エラーメッセージ

Python
1エラーメッセージ```
2Exception in Tkinter callback
3Traceback (most recent call last):
4  File "/Users/名前/anaconda3/lib/python3.7/tkinter/__init__.py", line 1705, in __call__
5    return self.func(*args)
6  File "chat_client.py", line 12, in change_display
7    yhost = whost.get()
8  File "/Users/名前/anaconda3/lib/python3.7/tkinter/__init__.py", line 2682, in get
9    return self.tk.call(self._w, 'get')
10_tkinter.TclError: invalid command name ".!entry2"

該当のソースコード

Python
1# -*- coding: <encoding name> -*-
2
3import tkinter
4import socket
5import sys
6
7
8def first_gui():
9    def change_display():
10        frm.destroy()
11        client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
12        yhost = whost.get()
13        yname = wname.get()
14        if not yhost:
15            yhost = "localhost"
16        else:
17            yhost = whost.get()
18
19        try:
20            client.connect((yhost, port))
21        except:
22            finish()
23
24        second_gui()
25
26    def finish():
27        sys.exit()
28
29    frm = tkinter.Tk()
30    frm.geometry('450x120')
31    frm.title('chat_start')
32
33    name = tkinter.Label(frm, text="名前")
34    wname = tkinter.Entry()
35    host = tkinter.Label(frm, text="接続先(IPアドレス)")
36    whost = tkinter.Entry()
37    sbtn = tkinter.Button(frm, text="開始", command=change_display)
38    ebtn = tkinter.Button(frm, text="終了", command=finish)
39
40    name.grid(column=0, row=0, pady=20, padx=10)
41    wname.grid(column=1, row=0, sticky='EW')
42    host.grid(column=0, row=1, padx=10)
43    whost.grid(column=1, row=1, sticky='EW')
44    sbtn.grid(column=2, row=1, padx=10)
45    ebtn.grid(column=3, row=1)
46
47    frm.mainloop()
48
49
50def second_gui():
51    
52    def change_display():
53        frm.destroy()
54        first_gui()
55
56    def output():
57        value = editbox.get()
58        msg.insert(0, value)
59        editbox.delete(0, "end")
60        if len(msg) <= 10:
61            for i in range(len(msg)):
62                canvas[10-i].delete("all")
63                canvas[10-i].create_text(250, 13, text=msg[i])
64        else:
65            for j in range(10):
66                canvas[10-j].delete("all")
67                canvas[10-j].create_text(250, 13, text=msg[j])
68
69    frm = tkinter.Tk()
70    frm.geometry('620x370')
71    frm.title('chat')
72    msg = []
73
74    canvas = {}
75    for i in range(1,11):
76        canvas[i] = tkinter.Canvas(frm, width=500, height=20, bg="yellow")
77        canvas[i].grid(column=0, row=i, padx=10)
78
79    window_name = tkinter.Label(frm, text="チャット", font=("",20),height=2, bg="blue", bd=2, relief="groove")
80    editbox = tkinter.Entry()
81    sbtn = tkinter.Button(frm, text="入力", command=output)
82    ebtn = tkinter.Button(frm, text="終了", command=change_display)
83
84    window_name.grid(column=0, row=0, pady=10, padx=10, sticky="EW")
85    editbox.grid(column=0, row=11, padx=10, sticky='EW')
86    sbtn.grid(column=1, row=11)
87    ebtn.grid(column=2, row=11, padx=10)
88
89    frm.mainloop()
90if __name__ == '__main__':
91    port = 50000
92    bufsize = 4096
93    first_gui()

↑chat_client.py

Python
1# -*- coding: <encoding name> -*-
2
3import socket
4import threading
5import sys
6
7port = 50000
8bufsize = 4096
9
10def multi(client, name):
11    while True:
12        m = client.recv(bufsize)
13        msg = m.decode("utf-8")
14        if msg == "q":
15            print("(",name,")が接続終了")
16            print()
17            global clist
18            print(clist)
19            print()
20            del clist[name]
21            print(clist)
22            client.close()
23            break
24        print("(",name, ")", msg)
25
26server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
27server.bind(("", port))
28server.listen()
29
30clist = {}
31
32while True:
33    client, addr = server.accept()
34    print("接続開始")
35    na = client.recv(bufsize)
36    name = str(na.decode("utf-8"))
37    if not (client in clist):
38        clist[name] = client
39    print("接続要求あり(",name,")")
40    p = threading.Thread(target = multi, args = (client, name))
41    p.start()

↑server.py

server,clientだけの場合

Python
1
2# -*- coding: <encoding name> -*-
3
4import socket
5import threading
6import sys
7
8port = 50000
9bufsize = 4096
10
11def multi(client, name):
12    while True:
13        m = client.recv(bufsize)
14        msg = m.decode("utf-8")
15        if msg == "q":
16            print("(",name,")が接続終了")
17            print()
18            global clist
19            print(clist)
20            print()
21            del clist[name]
22            print(clist)
23            client.close()
24            break
25        print("(",name, ")", msg)
26
27server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
28server.bind(("", port))
29server.listen()
30
31clist = {}
32
33while True:
34    client, addr = server.accept()
35    print("接続開始")
36    na = client.recv(bufsize)
37    name = str(na.decode("utf-8"))
38    if not (client in clist):
39        clist[name] = client
40    print("接続要求あり(",name,")")
41    p = threading.Thread(target = multi, args = (client, name))
42    p.start()

↑server.py

Python
1# -*- coding: <encoding name> -*-
2
3import socket
4import sys
5
6port = 50000
7bufsize = 4096
8
9client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
10name = input("名前：")
11host = input("接続先サーバ：")
12if host == "":
13    host = "localhost"
14try:
15    client.connect((host, port))
16except:
17    print("接続できませんでした")
18    sys.exit()
19
20client.send(name.encode("utf-8"))
21
22while True:
23    msg = input(";;;")
24    if msg == "q":
25        client.send(msg.encode("utf-8"))
26        client.close()
27        break
28    else:
29        client.send(msg.encode("utf-8"))