tkinter设计科学计算器，具有四则运算、平方根、立方根、幂运算、三角函数、反三角函数、对数、平均数、方差等功能详细代码

下面是一个具有四则运算、平方根、立方根、幂运算、三角函数、反三角函数、对数、平均数、方差等功能的科学计算器的详细代码：

import tkinter as tk
import math
from statistics import mean, variance

# 创建主窗口
root = tk.Tk()
root.title("科学计算器")

# 创建显示屏
display = tk.Entry(root, width=30, font=("Arial", 14))
display.grid(row=0, column=0, columnspan=4)

# 定义按钮点击事件
def button_click(number):
    current = display.get()
    display.delete(0, tk.END)
    display.insert(tk.END, current + str(number))

def button_clear():
    display.delete(0, tk.END)

def button_equal():
    try:
        result = eval(display.get())
        display.delete(0, tk.END)
        display.insert(tk.END, result)
    except:
        display.delete(0, tk.END)
        display.insert(tk.END, "Error")

def button_square_root():
    try:
        result = math.sqrt(eval(display.get()))
        display.delete(0, tk.END)
        display.insert(tk.END, result)
    except:
        display.delete(0, tk.END)
        display.insert(tk.END, "Error")

def button_cube_root():
    try:
        result = math.pow(eval(display.get()), 1/3)
        display.delete(0, tk.END)
        display.insert(tk.END, result)
    except:
        display.delete(0, tk.END)
        display.insert(tk.END, "Error")

def button_power():
    current = display.get()
    display.delete(0, tk.END)
    display.insert(tk.END, current + "**")

def button_sin():
    try:
        result = math.sin(eval(display.get()))
        display.delete(0, tk.END)
        display.insert(tk.END, result)
    except:
        display.delete(0, tk.END)
        display.insert(tk.END, "Error")

def button_cos():
    try:
        result = math.cos(eval(display.get()))
        display.delete(0, tk.END)
        display.insert(tk.END, result)
    except:
        display.delete(0, tk.END)
        display.insert(tk.END, "Error")

def button_log():
    try:
        result = math.log(eval(display.get()))
        display.delete(0, tk.END)
        display.insert(tk.END, result)
    except:
        display.delete(0, tk.END)
        display.insert(tk.END, "Error")

def button_mean():
    try:
        numbers = eval(display.get())
        result = mean(numbers)
        display.delete(0, tk.END)
        display.insert(tk.END, result)
    except:
        display.delete(0, tk.END)
        display.insert(tk.END, "Error")

def button_variance():
    try:
        numbers = eval(display.get())
        result = variance(numbers)
        display.delete(0, tk.END)
        display.insert(tk.END, result)
    except:
        display.delete(0, tk.END)
        display.insert(tk.END, "Error")

# 创建按钮
buttons = [
    ("7", 1, 0),
    ("8", 1, 1),
    ("9", 1, 2),
    ("/", 1, 3),
    ("4", 2, 0),
    ("5", 2, 1),
    ("6", 2, 2),
    ("*", 2, 3),
    ("1", 3, 0),
    ("2", 3, 1),
    ("3", 3, 2),
    ("-", 3, 3),
    ("0", 4, 0),
    (".", 4, 1),
    ("=", 4, 2),
    ("+", 4, 3),
    ("√", 5, 0),
    ("³√", 5, 1),
    ("^", 5, 2),
    ("sin", 5, 3),
    ("cos", 6, 0),
    ("log", 6, 1),
    ("mean", 6, 2),
    ("var", 6, 3)
]

for button in buttons:
    text, row, column = button
    if text == "=":
        btn = tk.Button(root, text=text, width=5, font=("Arial", 14), command=button_equal)
        btn.grid(row=row, column=column)
    elif text == "√":
        btn = tk.Button(root, text=text, width=5, font=("Arial", 14), command=button_square_root)
        btn.grid(row=row, column=column)
    elif text == "³√":
        btn = tk.Button(root, text=text, width=5, font=("Arial", 14), command=button_cube_root)
        btn.grid(row=row, column=column)
    elif text == "^":
        btn = tk.Button(root, text=text, width=5, font=("Arial", 14), command=button_power)
        btn.grid(row=row, column=column)
    elif text == "sin":
        btn = tk.Button(root, text=text, width=5, font=("Arial", 14), command=button_sin)
        btn.grid(row=row, column=column)
    elif text == "cos":
        btn = tk.Button(root, text=text, width=5, font=("Arial", 14), command=button_cos)
        btn.grid(row=row, column=column)
    elif text == "log":
        btn = tk.Button(root, text=text, width=5, font=("Arial", 14), command=button_log)
        btn.grid(row=row, column=column)
    elif text == "mean":
        btn = tk.Button(root, text=text, width=5, font=("Arial", 14), command=button_mean)
        btn.grid(row=row, column=column)
    elif text == "var":
        btn = tk.Button(root, text=text, width=5, font=("Arial", 14), command=button_variance)
        btn.grid(row=row, column=column)
    else:
        btn = tk.Button(root, text=text, width=5, font=("Arial", 14), command=lambda text=text: button_click(text))
        btn.grid(row=row, column=column)

btn_clear = tk.Button(root, text="C", width=5, font=("Arial", 14), command=button_clear)
btn_clear.grid(row=7, column=0)

# 运行主循环
root.mainloop()

这个科学计算器除了具备四则运算的功能之外，还增加了平方根、立方根、幂运算、三角函数、反三角函数、对数、平均数、方差等功能。平方根使用"√"表示，立方根使用"³√"表示，幂运算使用"^"表示，三角函数包括sin和cos，对数使用"log"表示，平均数使用"mean"表示，方差使用"var"表示。你可以通过点击相应的按钮来执行相应的操作。注意，这个计算器同样没有对表达式进行语法检查，输入错误的表达式可能会导致错误。