【Python】buttonモジュールを呼び出す前にウィンドウが消えてしまいます。

前提・実現したいこと

使用言語：Python 3.8.1

buttonを実行して値を取得できているかを確認したいと思っています。

発生している問題・エラーメッセージ

下記のコードの中で下記のエラーメッセージがでています。ウィンドウがボタンモジュールをつける前に消えてしまうということは分かったのですが、解決方法がわからず困っています。

Traceback (most recent call last):
  File "pokemon.py", line 87, in <module>
    button()
  File "pokemon.py", line 78, in button
    button = tk.Button(main.win, text = 'print', command = lambda : [ap.get_info(), dp.get_info()])
  File "C:\Users\gojin\AppData\Local\Programs\Python\Python38-32\lib\tkinter\__init__.py", line 2645, in __init__
    Widget.__init__(self, master, 'button', cnf, kw)
  File "C:\Users\gojin\AppData\Local\Programs\Python\Python38-32\lib\tkinter\__init__.py", line 2567, in __init__
    self.tk.call(
_tkinter.TclError: can't invoke "button" command: application has been destroyed

該当のソースコード

Python
1import tkinter as tk
2import tkinter.ttk as ttk
3import sqlite3 as sql
4
5import main
6import cursor
7
8main
9cursor
10
11class AttackingPokemon:
12
13    def __init__(self, name, type1, type2, lv, iv, ev, nature, status, A, C, S):
14
15        self.name = name
16        self.type1 = type1
17        self.type2 = type2
18        self.lv = lv
19        self.iv = iv
20        self.ev = ev
21        self.nature = nature
22        self.status = status
23        self.A = A
24        self.C = C
25        self.S = S
26
27    def get_info(self):
28
29        print(self.name.get())
30        print(self.type1.get())
31        print(self.type2.get())
32        print(self.lv.get())
33        print(self.iv.get())
34        print(self.ev.get())
35        print(self.nature.get())
36        print(self.status)
37        print(self.A)
38        print(self.C)
39        print(self.S)
40
41class DefendingPokemon:
42
43    def __init__(self, name, type1, type2, lv, iv, ev, nature, status, H, B, D, S):
44
45        self.name = name
46        self.type1 = type1
47        self.type2 = type2
48        self.lv = lv
49        self.iv = iv
50        self.ev = ev
51        self.nature = nature
52        self.status = status
53        self.H = H
54        self.B = B
55        self.D = D
56        self.S = S
57
58    def get_info(self):
59
60        print(self.name.get())
61        print(self.type1)
62        print(self.type2)
63        print(self.lv.get())
64        print(self.iv.get())
65        print(self.ev.get())
66        print(self.nature.get())
67        print(self.status)
68        print(self.H)
69        print(self.B)
70        print(self.D)
71        print(self.S)
72
73def button():
74
75    ap = AttackingPokemon(main.aname, cursor.at1, cursor.at2, main.alventry, main.aiventry, main.aeventry, main.anaturecheck, '-', cursor.A, cursor.C, cursor.aS)
76    dp = DefendingPokemon(main.dname, cursor.dt1, cursor.dt2, main.dlventry, main.diventry, main.deventry, main.dnaturecheck, '-', cursor.H, cursor.B, cursor.D, cursor.dS)
77
78    button = tk.Button(main.win, text = 'print', command = lambda : [ap.get_info(), dp.get_info()])
79    button.pack()
80
81    main.win.mainloop()
82
83if __name__ == "__main__":
84
85    main
86    main.win.mainloop()
87    button()

Python
1#main.py
2
3import tkinter as tk
4import tkinter.ttk as ttk
5
6win = tk.Tk()
7win.title('ダメージ計算')
8win.geometry('500x600')
9
10atkframe = tk.Frame(win)
11atkframe.pack(pady = 5)
12
13nameframe = tk.Frame(atkframe)
14nameframe.pack(pady = 5)
15alabel = tk.Label(nameframe, text = "攻撃側 ")
16alabel.pack(side = 'left')
17aname = tk.Entry(nameframe, name = 'aname')
18aname.pack(side = 'left')
19aname.insert(index = 'insert', string = "インテレオン")
20
21lvframe = tk.Frame(atkframe)
22lvframe.pack(pady = 5)
23alvlabel = tk.Label(lvframe, text = "レベル ")
24alvlabel.pack(side = 'left')
25alventry = tk.Entry(lvframe)
26alventry.pack(side = 'left')
27alventry.insert(index = 'insert', string = '50')
28
29idframe = tk.Frame(atkframe)
30idframe.pack(pady = 5)
31aivlabel = tk.Label(idframe, text = "個体値 ")
32aivlabel.pack(side = 'left', ipadx = 5)
33aiventry = tk.Entry(idframe)
34aiventry.pack(side = 'left')
35aiventry.insert(index = 'insert', string = '31')
36
37aevlabel = tk.Label(idframe, text = "努力値 ")
38aevlabel.pack(side = 'left')
39aeventry = tk.Entry(idframe)
40aeventry.pack(side = 'left', ipadx = 5)
41aeventry.insert(index = 'insert', string = '252')
42
43natureframe = tk.Frame(atkframe)
44natureframe.pack(pady = 8)
45anaturelabel = tk.Label(natureframe, text = "性格 ")
46anaturelabel.pack(side = 'left')
47anaturecheck = ttk.Combobox(natureframe, state = 'readonly')
48anaturecheck['values'] = ("", "さみしがり", "いじっぱり", "やんちゃ", "ゆうかん", "ずぶとい", "わんぱく", "のうてんき", "のんき", "ひかえめ", "おっとり", "うっかりや", "れいせい", "おだやか", "おとなしい", "しんちょう", "なまいき", "おくびょう", "せっかち", "ようき", "むじゃき", "てれや", "がんばりや", "すなお", "きまぐれ", "まじめ")
49anaturecheck.current(0)
50anaturecheck.pack(side = 'left')
51
52moveframe = tk.Frame(atkframe)
53moveframe.pack()
54mlabel = tk.Label(moveframe, text = "わざ名 ")
55mlabel.pack()
56mname = tk.Entry(moveframe)
57mname.pack()
58mname.insert(index = 'insert', string = "")
59
60defframe = tk.Frame(win)
61defframe.pack(pady = 15)
62
63nameframe = tk.Frame(defframe)
64nameframe.pack(pady = 5)
65dlabel = tk.Label(nameframe, text = "防御側 ")
66dlabel.pack(side = 'left')
67dname = tk.Entry(nameframe)
68dname.pack(side = 'left')
69dname.insert(index = 'insert', string = "エースバーン")
70
71lvframe = tk.Frame(defframe)
72lvframe.pack(pady = 5)
73dlvlabel = tk.Label(lvframe, text = "レベル ")
74dlvlabel.pack(side = 'left')
75dlventry = tk.Entry(lvframe)
76dlventry.pack(side = 'left')
77dlventry.insert(index = 'insert', string = '50')
78
79idframe = tk.Frame(defframe)
80idframe.pack(pady = 5)
81divlabel = tk.Label(idframe, text = "個体値 ")
82divlabel.pack(side = 'left', ipadx = 5)
83diventry = tk.Entry(idframe)
84diventry.pack(side = 'left')
85diventry.insert(index = 'insert', string = '31')
86
87devlabel = tk.Label(idframe, text = "努力値 ")
88devlabel.pack(side = 'left')
89deventry = tk.Entry(idframe)
90deventry.pack(side = 'left', ipadx = 5)
91deventry.insert(index = 'insert', string = '252')
92
93natureframe = tk.Frame(defframe)
94natureframe.pack(pady = 8)
95dnaturelabel = tk.Label(natureframe, text = "性格 ")
96dnaturelabel.pack(side = 'left')
97dnaturecheck = ttk.Combobox(natureframe)
98dnaturecheck['values'] = ("", "さみしがり", "いじっぱり", "やんちゃ", "ゆうかん", "ずぶとい", "わんぱく", "のうてんき", "のんき", "ひかえめ", "おっとり", "うっかりや", "れいせい", "おだやか", "おとなしい", "しんちょう", "なまいき", "おくびょう", "せっかち", "ようき", "むじゃき", "てれや", "がんばりや", "すなお", "きまぐれ", "まじめ")
99dnaturecheck.current(0)
100dnaturecheck.pack(side = 'left')

Python
1#cursor.py
2
3import tkinter as tk
4import sqlite3 as sql
5import tkinter.ttk as ttk
6
7import main
8
9main
10
11dbpath = "dex.sqlite3"
12conn = sql.connect(dbpath)
13cur = conn.cursor()
14
15cur.execute("SELECT type1 FROM dex WHERE name = '%s'" % main.aname.get())
16at1 = cur.fetchone()
17cur.execute("SELECT type2 FROM dex WHERE name = '%s'" % main.aname.get())
18at2 = cur.fetchone()
19cur.execute("SELECT A FROM dex WHERE name = '%s'" % main.aname.get())
20A = cur.fetchone()
21cur.execute("SELECT C FROM dex WHERE name = '%s'" % main.aname.get())
22C = cur.fetchone()
23cur.execute("SELECT S FROM dex WHERE name = '%s'" % main.aname.get())
24aS = cur.fetchone()
25
26cur.execute("SELECT type1 FROM dex WHERE name = '%s'" % main.dname.get())
27dt1 = cur.fetchone()
28cur.execute("SELECT type2 FROM dex WHERE name = '%s'" % main.aname.get())
29dt2 = cur.fetchone()
30cur.execute("SELECT H FROM dex WHERE name = '%s'" % main.dname.get())
31H = cur.fetchone()
32cur.execute("SELECT B FROM dex WHERE name = '%s'" % main.dname.get())
33B = cur.fetchone()
34cur.execute("SELECT D FROM dex WHERE name = '%s'" % main.dname.get())
35D = cur.fetchone()
36cur.execute("SELECT S FROM dex WHERE name = '%s'" % main.dname.get())
37dS = cur.fetchone()
38
39cur.execute("SELECT type FROM moves WHERE name = '%s'" % main.mname.get())
40mtype = cur.fetchone()
41cur.execute("SELECT mtype FROM moves WHERE name = '%s'" % main.mname.get())
42mmtype = cur.fetchone()
43cur.execute("SELECT power FROM moves WHERE name = '%s'" % main.mname.get())
44mpower = cur.fetchone()
45
46cur.execute("SELECT rev FROM types WHERE type1 = '%s' AND type2 = '%s'" % (mtype, dt1))
47rev1 = cur.fetchone()
48cur.execute("SELECT rev FROM types WHERE type1 = '%s' AND type2 = '%s'"% (mtype, dt2))
49rev2 = cur.fetchone()
50
51main.win.mainloop()
52
53if __name__ == "__main__":
54    
55    main
56    main.win.mainloop()