用十种编程语言开发计算器应用
- C语言
- C#（windows桌面软件）
- Swift （ios应用）
- python
- Dart（Flutter应用，跨平台，适用安卓、ios、mac、windows、web）
- Java（安卓App）
- Kotlin （安卓App）
- Js+Html+Vue（H5应用）
- 微信小程序
- 抖音小程序
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Python语言版
请添加图片描述
开发工具
Pycharm
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工程截图
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关键代码文件
- calculator.py 绘制计算器界面及逻辑处理程序
import tkinter as tk
def printout(result1, result2, frm):
label1 = tk.Label(frm, font=('微软雅黑', 20), bg='#0a0a0a', bd='9', fg='#ffffff', anchor='se', textvariable=result1)
label1.place(relx=1, rely=0.5, relwidth=1, relheight=0.5, anchor='se')
label2 = tk.Label(frm, font=('微软雅黑', 20), bg='#0a0a0a', bd='9', fg='#ffffff', anchor='se', textvariable=result2)
label2.place(relx=1, rely=1, relwidth=1, relheight=0.5, anchor='se')
def layout(root, result1, result2):
frm1 = tk.Frame(root)
frm1.config(width=320, height=100, relief='solid')
printout(result1, result2, frm1)
frm1.grid(row=0, column=0)
frm1.grid_propagate(0)
frm1.update()
frm2 = tk.Frame(root)
frm2.config(width=320, height=400, bg='#dfe9f4', relief='solid')
layout_button(frm2)
frm2.grid(row=1, column=0)
frm2.grid_propagate(0)
def layout_button(frm):
btn7 = tk.Button(frm, text='7', font=('微软雅黑', 20), bg='#f1f5fa', command=lambda: press_num('7'))
btn7.place(relx=0.125, rely=0.125, relwidth=0.23, relheight=0.23, anchor='center')
btn8 = tk.Button(frm, text='8', font=('微软雅黑', 20), bg='#f1f5fa', command=lambda: press_num('8'))
btn8.place(relx=0.375, rely=0.125, relwidth=0.23, relheight=0.23, anchor='center')
btn9 = tk.Button(frm, text='9', font=('微软雅黑', 20), bg='#f1f5fa', command=lambda: press_num('9'))
btn9.place(relx=0.625, rely=0.125, relwidth=0.23, relheight=0.23, anchor='center')
btn4 = tk.Button(frm, text='4', font=('微软雅黑', 20), bg='#f1f5fa', command=lambda: press_num('4'))
btn4.place(relx=0.125, rely=0.375, relwidth=0.23, relheight=0.23, anchor='center')
btn5 = tk.Button(frm, text='5', font=('微软雅黑', 20), bg='#f1f5fa', command=lambda: press_num('5'))
btn5.place(relx=0.375, rely=0.375, relwidth=0.23, relheight=0.23, anchor='center')
btn6 = tk.Button(frm, text='6', font=('微软雅黑', 20), bg='#f1f5fa', command=lambda: press_num('6'))
btn6.place(relx=0.625, rely=0.375, relwidth=0.23, relheight=0.23, anchor='center')
btn1 = tk.Button(frm, text='1', font=('微软雅黑', 20), bg='#f1f5fa', command=lambda: press_num('1'))
btn1.place(relx=0.125, rely=0.625, relwidth=0.23, relheight=0.23, anchor='center')
btn2 = tk.Button(frm, text='2', font=('微软雅黑', 20), bg='#f1f5fa', command=lambda: press_num('2'))
btn2.place(relx=0.375, rely=0.625, relwidth=0.23, relheight=0.23, anchor='center')
btn3 = tk.Button(frm, text='3', font=('微软雅黑', 20), bg='#f1f5fa', command=lambda: press_num('3'))
btn3.place(relx=0.625, rely=0.625, relwidth=0.23, relheight=0.23, anchor='center')
btn10 = tk.Button(frm, text='0', font=('微软雅黑', 20), bg='#f1f5fa', command=lambda: press_num('0'))
btn10.place(relx=0.125, rely=0.875, relwidth=0.23, relheight=0.23, anchor='center')
btn11 = tk.Button(frm, text='.', font=('微软雅黑', 20), bg='#f1f5fa', command=lambda: press_num('.'))
btn11.place(relx=0.375, rely=0.875, relwidth=0.23, relheight=0.23, anchor='center')
btn12 = tk.Button(frm, text='=', font=('微软雅黑', 20), bg='#f1f5fa', command=lambda: press_equal())
btn12.place(relx=0.625, rely=0.875, relwidth=0.23, relheight=0.23, anchor='center')
btn13 = tk.Button(frm, text='+', font=('微软雅黑', 20), bg='#f1f5fa', command=lambda: press_compute('+'))
btn13.place(relx=0.875, rely=0.125, relwidth=0.23, relheight=0.23, anchor='center')
btn13 = tk.Button(frm, text='-', font=('微软雅黑', 20), bg='#f1f5fa', command=lambda: press_compute('-'))
btn13.place(relx=0.875, rely=0.375, relwidth=0.23, relheight=0.23, anchor='center')
btn13 = tk.Button(frm, text='X', font=('微软雅黑', 20), bg='#f1f5fa', command=lambda: press_compute('*'))
btn13.place(relx=0.875, rely=0.625, relwidth=0.23, relheight=0.23, anchor='center')
btn13 = tk.Button(frm, text='÷', font=('微软雅黑', 20), bg='#f1f5fa', command=lambda: press_compute('/'))
btn13.place(relx=0.875, rely=0.875, relwidth=0.23, relheight=0.23, anchor='center')
def press_num(num):
global isintbtn # 标记按钮按的数字，默认未按
global isstrbtn # 标记按钮按的符号，默认未按
global is_equal_last # 标记上一个按键
global last_num # 记录上一个数字
global list
if isstrbtn == False:
pass
else:
result2.set(0)
isstrbtn = False # 若上次按键为符号，数字重新清零开始计数
if is_equal_last == True:
result2.set(0) # 等号同理
oldnum = result2.get()
if oldnum == '0':
result2.set(num)
last_num = num
else:
newnum = oldnum + num
result2.set(newnum)
last_num = newnum # 连续按数字，将数字连起来作为新的数字
is_equal_last = False # 标记下上个按键已不是等号
def press_compute(sign):
global isintbtn
global isstrbtn
global is_equal_last
global last_cpt
global list
num = result2.get()
list.append(num) # 把数字记录到列表中
list.append(sign)
isstrbtn = True # 把符号记录到列表中
is_equal_last = False
last_cpt = sign
cur_out = ''.join(list)
result1.set(cur_out) # 上部分显示板显示之前输入的数字
def press_equal():
global isintbtn
global isstrbtn
global is_equal_last
global last_num
global list
if is_equal_last == False:
curnum = result2.get()
list.append(curnum)
computeStr = ''.join(list)
endnum = eval(computeStr) # 使用eval函数将list内容计算出结果
result2.set(endnum)
result1.set(computeStr) # 将计算结果和内容显示在显示板上
is_equal_last = True # 标记此时最后一个按键是等号
list.clear() # 清空list
else:
curnum = result2.get() # 如果上次按键是等号，记录上次的计算结果
list.append(curnum)
list.append(last_cpt)
list.append(str(last_num)) # 将计算结果、最后一次的符号、最后一个数字添加到list中
# print(list)
computeStr = ''.join(list)
endnum = eval(computeStr)
# print(computeStr)
result2.set(endnum)
result1.set(computeStr)
is_equal_last = True
list.clear() # 按照新的list计算结果并显示
root = tk.Tk()
root.title("计算器-花生皮编程")
root['bg'] = '#181818'
root.geometry("320x500")
isintbtn = False # 确认是否按下了计算符，默认为未按下
isstrbtn = False
is_equal_last = False # 确认上一个按键是不是等号，便于处理连续按了等号的情况
last_num = [] # 上一个数字保存
last_cpt = '' # 上一个计算符号保存，便与处理如果连续按了等号的情况
list = [] # 保存按下的数据和字符，一是用于最终结果计算，而是现实在上面现实板上
result1 = tk.StringVar()
result1.set('') # 上面显示板，默认显示空
result2 = tk.StringVar()
result2.set(0) # 下面显示板，默认显示0
layout(root, result1, result2)
root.mainloop()
完整源代码
https://gitee.com/hspbc/calculators
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系列文章
用十种编程语言开发计算器应用-第一篇-C语言
用十种编程语言开发计算器应用-第二篇-Java
用十种编程语言开发计算器应用-第三篇-Python
用十种编程语言开发计算器应用-第四篇-Kotlin
用十种编程语言开发计算器应用-第五篇-Flutter
用十种编程语言开发计算器应用-第六篇-iOS
用十种编程语言开发计算器应用-第七篇-h5(Js+Html+Vue)
用十种编程语言开发计算器应用-第八篇-微信小程序
用十种编程语言开发计算器应用-第九篇-抖音小程序
用十种编程语言开发计算器应用-第十篇-C#(Windows桌面软件)
关于我
厦门大学计算机专业|华为八年高级工程师
十年软件开发经验，5年编程培训教学经验
目前从事编程教学，软件开发指导，软件类毕业设计指导。
所有编程资料及开源项目见https://cxyxy.blog.csdn.net/article/details/120405881