回答編集履歴
1
クラスを使った実装例を追加
test
CHANGED
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root.mainloop()
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```
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もし、クラス定義(ユーザ定義データ型)を理解できるなら、entry と answer をまとめたクラスにするのもいい手だと思います。
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```python
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from tkinter import *
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import tkinter as tk
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import tkinter.ttk as ttk
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PI = 3.14
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def menseki(r):
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"""円面積を計算して返す"""
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return PI * r**2
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def enshu(r):
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"""円周の長さを計算して返す"""
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return 2 * PI * r
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# プルダウンリスト
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action = {
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"1.円面積": menseki,
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"2.円周": enshu,
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}
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class CaluculateVar:
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def __init__(self):
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self.entry = tk.StringVar()
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self.answer = tk.StringVar()
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def calculate(self, formura):
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try:
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self.answer.set(formura(int(self.entry.get())))
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except ValueError:
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self.answer.set("")
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def clear(self):
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self.entry.set("")
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self.answer.set("")
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def calculate():
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"""一括計算"""
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formura = action.get(combo.get())
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if not formura:
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return
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for variable in variables:
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variable.calculate(formura)
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def clear():
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"""入力値・出力値をクリア"""
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for variable in variables:
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variable.clear()
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# ウインド画面の作成
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root = tk.Tk()
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root.title("円面積・円周 計算アプリ")
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root.geometry("400x400")
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def _on_frame_configure(self, event=None):
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canvas.configure(scrollregion=canvas.bbox("all"))
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# プルダウンの設定
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combo = ttk.Combobox(root, state="readonly", width=26)
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combo["values"] = list(action.keys())
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combo.place(x=80, y=50)
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# フレームの設定
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frame = Frame(root, borderwidth=1, relief=SUNKEN, bg="black")
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frame.grid(column=0, row=0, padx=50, pady=100)
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# スクロールバーの設定
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yscrollbar = Scrollbar(frame)
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yscrollbar.grid(column=1, row=0, sticky=N+S)
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# キャンバスの設定
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canvas = Canvas(frame, width=290, height=220, bd=0,
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yscrollcommand=yscrollbar.set)
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canvas.grid(column=0, row=0, sticky=N+S+E+W)
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# スクロールバーを動かす
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yscrollbar.config(command=canvas.yview)
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frame = Frame(canvas, borderwidth=1, relief=SUNKEN)
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canvas.create_window(4, 4, window=frame, anchor='nw')
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frame.bind("<Configure>", _on_frame_configure)
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# ラベル・テキストボックスの設定
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variables = [CaluculateVar() for _ in range(20)]
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for i, variable in enumerate(variables, 1):
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# 番号
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label = ttk.Label(frame, text=str(i))
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label.grid(column=1, row=i, sticky=W)
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# 入力箇所
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entry = ttk.Entry(frame, textvariable=variable.entry)
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entry.grid(column=2, row=i, sticky=W)
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# 計算結果を示す右矢印
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labe2 = ttk.Label(frame, text="⇒")
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labe2.grid(column=3, row=i, sticky=W)
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# 出力箇所
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answer = ttk.Entry(frame, textvariable=variable.answer)
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answer.grid(column=4, row=i, sticky=W)
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# 実行ボタンの設定
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button1 = tk.Button(root, text="実行", font=("Meiryo UI", 8), width=8,
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height=2, bg="steel blue", fg="white", command=calculate)
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button1.place(x=300, y=30)
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# クリアボタンの設定
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button2 = tk.Button(root, text="全クリア", font=("Meiryo UI", 8),
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width=8, height=2, bg="ivory2", fg="black", command=clear)
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button2.place(x=300, y=350)
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root.mainloop()
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```
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