import tkinter as tk


def create_button(win, color, font):
    btns = []
    op = ['C', '←', '÷', '×', '7', '8', '9', '-', '4', '5', '6', '+', '1', '2', '3', '=', '0', '.']
    row = 2
    for i in range(len(op)):
        if '0' <= op[i] <= '9' or op[i] == '.':
            c = color['ncolor']
            ac = color['nbcolor']
        else:
            c = color['ocolor']
            ac = color['obcolor']
        # 创建按钮
        btn = tk.Button(
            win,
            text=op[i],
            width=5,
            font=font,
            relief=tk.FLAT,
            bg=c,
            activebackground=ac
        )
        if op[i] == '=':
            btn.config(height=3)
        if op[i] == '0':
            btn.config(width=12)

        # 布局
        row_span = 1
        column_span = 1
        # 设置行列
        if i % 4 == 0:
            row += 1
        col = i % 4 + 1
        # 处理特殊按钮
        if row == 7 and col == 2:
            col += 1
        if row == 6 and col == 4:
            row_span = 2
        if row == 7 and col == 1:
            column_span = 2
        # 按钮布局
        btn.grid(row=row, column=col, padx=4, pady=2, rowspan=row_span, columnspan=column_span)
        btns.append(btn)
    return btns