Python | input()

import tkinter as tk
from tkinter import messagebox
import datetime

HISTORY_FILE = "calc_history.txt"

def save_history(expression, result):
    """履歴をファイルに追記"""
    with open(HISTORY_FILE, "a", encoding="utf-8") as f:
        time_str = datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")
        f.write(f"[{time_str}] {expression} = {result}\n")

def calculate():
    expr = entry.get()
    if not expr.strip():
        return

    try:
        result = eval(expr)
        result_label.config(text=f"結果：{result}")
        save_history(expr, result)
        entry.delete(0, tk.END)
    except Exception as e:
        messagebox.showerror("エラー", f"無効な式です：{e}")

# --- GUI構築 ---
root = tk.Tk()
root.title("メモ付き電卓（tkinter版）")
root.geometry("320x200")

frame = tk.Frame(root, padx=10, pady=10)
frame.pack(fill="both", expand=True)

tk.Label(frame, text="数式を入力（例：2+3*4）").pack()
entry = tk.Entry(frame, font=("Arial", 14))
entry.pack(fill="x", pady=5)

tk.Button(frame, text="計算", command=calculate).pack(pady=5)
result_label = tk.Label(frame, text="結果：", font=("Arial", 14))
result_label.pack(pady=5)

tk.Label(frame, text="履歴は calc_history.txt に保存されます。", fg="gray").pack(side="bottom")

root.mainloop()

import tkinter as tk
from tkinter import messagebox
import datetime

HISTORY_FILE = "calc_history.txt"

def save_history(expression, result):
    """履歴をファイルに追記"""
    with open(HISTORY_FILE, "a", encoding="utf-8") as f:
        time_str = datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")
        f.write(f"[{time_str}] {expression} = {result}\n")

def calculate():
    expr = entry.get()
    if not expr.strip():
        return

    try:
        result = eval(expr)
        result_label.config(text=f"結果：{result}")
        save_history(expr, result)
        entry.delete(0, tk.END)
    except Exception as e:
        messagebox.showerror("エラー", f"無効な式です：{e}")

# --- GUI構築 ---
root = tk.Tk()
root.title("メモ付き電卓（tkinter版）")
root.geometry("320x200")

frame = tk.Frame(root, padx=10, pady=10)
frame.pack(fill="both", expand=True)

tk.Label(frame, text="数式を入力（例：2+3*4）").pack()
entry = tk.Entry(frame, font=("Arial", 14))
entry.pack(fill="x", pady=5)

tk.Button(frame, text="計算", command=calculate).pack(pady=5)
result_label = tk.Label(frame, text="結果：", font=("Arial", 14))
result_label.pack(pady=5)

tk.Label(frame, text="履歴は calc_history.txt に保存されます。", fg="gray").pack(side="bottom")

root.mainloop()

import PySimpleGUI as sg
import datetime

HISTORY_FILE = "calc_history.txt"

def save_history(expression, result):
    """履歴をファイルに追記"""
    with open(HISTORY_FILE, "a", encoding="utf-8") as f:
        time_str = datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")
        f.write(f"[{time_str}] {expression} = {result}\n")

# --- GUI レイアウト ---
layout = [
    [sg.Text("数式を入力してください（例：2+3*4）")],
    [sg.Input(key="expr")],
    [sg.Button("計算"), sg.Button("終了")],
    [sg.Text("結果：", key="result", size=(30, 1), text_color="blue")],
    [sg.Text("履歴は calc_history.txt に保存されます。", text_color="gray")]
]

window = sg.Window("メモ付き電卓（PySimpleGUI版）", layout)

while True:
    event, values = window.read()
    if event in (sg.WINDOW_CLOSED, "終了"):
        break

    if event == "計算":
        expr = values["expr"]
        if not expr.strip():
            continue
        try:
            result = eval(expr)
            window["result"].update(f"結果：{result}")
            save_history(expr, result)
            window["expr"].update("")  # 入力欄をクリア
        except Exception as e:
            sg.popup_error(f"エラー: {e}")

window.close()

import PySimpleGUI as sg
import datetime

HISTORY_FILE = "calc_history.txt"

def save_history(expression, result):
    """履歴をファイルに追記"""
    with open(HISTORY_FILE, "a", encoding="utf-8") as f:
        time_str = datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")
        f.write(f"[{time_str}] {expression} = {result}\n")

# --- GUI レイアウト ---
layout = [
    [sg.Text("数式を入力してください（例：2+3*4）")],
    [sg.Input(key="expr")],
    [sg.Button("計算"), sg.Button("終了")],
    [sg.Text("結果：", key="result", size=(30, 1), text_color="blue")],
    [sg.Text("履歴は calc_history.txt に保存されます。", text_color="gray")]
]

window = sg.Window("メモ付き電卓（PySimpleGUI版）", layout)

while True:
    event, values = window.read()
    if event in (sg.WINDOW_CLOSED, "終了"):
        break

    if event == "計算":
        expr = values["expr"]
        if not expr.strip():
            continue
        try:
            result = eval(expr)
            window["result"].update(f"結果：{result}")
            save_history(expr, result)
            window["expr"].update("")  # 入力欄をクリア
        except Exception as e:
            sg.popup_error(f"エラー: {e}")

window.close()