網站首頁 編程語言 正文
上次我用我學習的python做一個簡易的計算器，我對計算器進行了，更改優化，變成了一個真正的計算器
實現流程
1.計算機布局
2.計算機執行
首先導入模塊:
Tkinter 作為 Python GUI 開發工具之一，它具有 GUI 軟件包的必備的常用功能。比如，它提供了十多種不同類型的窗口控件、窗口布局管理器、事件處理機制等，加之其開發效率高、代碼簡潔易讀
import tkinter as tk
#Python3標準安裝包中自帶tkinter，即不用安裝，導入即可使用。
#可以從命令行運行python -m tkinter會打開一個窗口
#演示一個簡單的Tk接口，證明tkinter已正確安裝在系統上.
#python -m tkinter
計算器布局
1、先完成整個計算機的布局及其它輸出結果的一欄
前面完成整體布局就細化計算器中的按鈕
1、前四行代碼是定義按鈕的符號、長寬、字體、顏色
2、后四行是按鈕的間距
root = tk.Tk()
root.title('計算器')
root.geometry('295x280+100+100') #邊距
font = ('宋體', 20)
font_16 = ('宋體', 16)
root.attributes("-alpha", 0.9) #設置透明度
result_num = tk.StringVar() #賦予可變變量
result_num.set('')
tk.Label(root,
textvariable=result_num, font=font, height=2,
width=20, justify=tk.LEFT, anchor=tk.SE
).grid(row=1, column=1, columnspan=4) #顯示結果的布局
button_clear = tk.Button(root, text='C', width=5, font=font_16, relief=tk.FLAT, bg='#b1b2b2') #定義按鈕的符號、長寬、字體、顏色
button_back = tk.Button(root, text='←', width=5, font=font_16, relief=tk.FLAT, bg='#b1b2b2') #定義按鈕的符號、長寬、字體、顏色
button_division = tk.Button(root, text='÷', width=5, font=font_16, relief=tk.FLAT, bg='#b1b2b2') #定義按鈕的符號、長寬、字體、顏色
button_multiplication = tk.Button(root, text='×', width=5, font=font_16, relief=tk.FLAT, bg='#b1b2b2') #定義按鈕的符號、長寬、字體、顏色
button_clear.grid(row=2, column=1, padx=4, pady=2)
button_back.grid(row=2, column=2, padx=4, pady=2)
button_division.grid(row=2, column=3, padx=4, pady=2)
button_multiplication.grid(row=2, column=4, padx=4, pady=2) #定義按鈕位置
#依葫蘆畫瓢
button_seven = tk.Button(root, text='7', width=5, font=font_16, relief=tk.FLAT, bg='#eacda1')
button_eight = tk.Button(root, text='8', width=5, font=font_16, relief=tk.FLAT, bg='#eacda1')
button_nine = tk.Button(root, text='9', width=5, font=font_16, relief=tk.FLAT, bg='#eacda1')
button_subtraction = tk.Button(root, text='-', width=5, font=font_16, relief=tk.FLAT, bg='#b1b2b2')
button_seven.grid(row=3, column=1, padx=4, pady=2)
button_eight.grid(row=3, column=2, padx=4, pady=2)
button_nine.grid(row=3, column=3, padx=4, pady=2)
button_subtraction.grid(row=3, column=4, padx=4, pady=2)
#依葫蘆畫瓢
button_four = tk.Button(root, text='4', width=5, font=font_16, relief=tk.FLAT, bg='#eacda1')
button_five = tk.Button(root, text='5', width=5, font=font_16, relief=tk.FLAT, bg='#eacda1')
button_six = tk.Button(root, text='6', width=5, font=font_16, relief=tk.FLAT, bg='#eacda1')
button_addition = tk.Button(root, text='+', width=5, font=font_16, relief=tk.FLAT, bg='#b1b2b2')
button_four.grid(row=4, column=1, padx=4, pady=2)
button_five.grid(row=4, column=2, padx=4, pady=2)
button_six.grid(row=4, column=3, padx=4, pady=2)
button_addition.grid(row=4, column=4, padx=4, pady=2)
#依葫蘆畫瓢
button_one = tk.Button(root, text='1', width=5, font=font_16, relief=tk.FLAT, bg='#eacda1')
button_two = tk.Button(root, text='2', width=5, font=font_16, relief=tk.FLAT, bg='#eacda1')
button_three = tk.Button(root, text='3', width=5, font=font_16, relief=tk.FLAT, bg='#eacda1')
button_equal = tk.Button(root, text='=', width=5, font=font_16, relief=tk.FLAT, bg='#b1b2b2')
button_one.grid(row=5, column=1, padx=4, pady=2)
button_two.grid(row=5, column=2, padx=4, pady=2)
button_three.grid(row=5, column=3, padx=4, pady=2)
button_equal.grid(row=5, column=4, padx=4, pady=2)
button_zero1 = tk.Button(root, text=' ', width=5, font=font_16, relief=tk.FLAT, bg='#eacda1')
button_zero = tk.Button(root, text='0', width=5, font=font_16, relief=tk.FLAT, bg='#eacda1')
button_dot = tk.Button(root, text='.', width=5, font=font_16, relief=tk.FLAT, bg='#eacda1')
button_equal2 = tk.Button(root, text=' ', width=5, font=font_16, relief=tk.FLAT, bg='#b1b2b2')
button_zero1.grid(row=6, column=1, padx=4, pady=2)
button_zero.grid(row=6, column=2, padx=4, pady=2)
button_dot.grid(row=6, column=3, padx=4, pady=2)
button_equal2.grid(row=6, column=4, padx=4, pady=2)
計算機執行
計算器布局完成后（主體和細節） 賦予計算器計算能力
1、點擊按鈕實現出現結果輸出欄及計算器的輸出欄
2、賦予事件能力
def click_button(x):
print('X:\t', x)
result_num.set(result_num.get() + x)
點擊按鈕可以輸入所對應的結果 并且調用lambda函數計算輸入結果并反饋
ambda 函數是匿名的： 所謂匿名函數，通俗地說就是沒有名字的函數。lambda函數沒有名字。 lambda 函數有輸入和輸出： 輸入是傳入到參數列表argument_list的值，輸出是根據表達式expression計算得到的值。
button_one.config(command=lambda: click_button('1'))
button_two.config(command=lambda: click_button('2'))
button_three.config(command=lambda: click_button('3'))
button_four.config(command=lambda: click_button('4'))
button_five.config(command=lambda: click_button('5'))
button_six.config(command=lambda: click_button('6'))
button_seven.config(command=lambda: click_button('7'))
button_eight.config(command=lambda: click_button('8'))
button_nine.config(command=lambda: click_button('9'))
button_zero.config(command=lambda: click_button('0'))
button_dot.config(command=lambda: click_button('.'))
button_addition.config(command=lambda: click_button('+'))
button_subtraction.config(command=lambda: click_button('-'))
button_multiplication.config(command=lambda: click_button('*'))
button_division.config(command=lambda: click_button('/'))
button_clear.config(command=lambda: btnClearDisplay())
button_equal.config(command=calculation)
調用calculation時間用來計算輸入結果 其中str來轉化字符串.
調用btnClearDisplay清除來清空輸入結果
def calculation():
opt_str = result_num.get()
result = eval(opt_str)
result_num.set(str(result))
def btnClearDisplay():
opt_str = result_num.get()
result = eval(str(opt_str))
result_num.set("")
最后一行代碼不需要觸發lambda 因為不需要匿名函數也不用傳遞參數 ? ??
button_clear.config(command=lambda: btnClearDisplay())
button_equal.config(command=calculation)
代碼展示
import tkinter as tk
root = tk.Tk()
root.title('計算器')
root.geometry('295x280+100+100')
font = ('宋體', 20)
font_16 = ('宋體', 16)
root.attributes("-alpha", 0.9)
result_num = tk.StringVar()
result_num.set('')
tk.Label(root,
textvariable=result_num, font=font, height=2,
width=20, justify=tk.LEFT, anchor=tk.SE
).grid(row=1, column=1, columnspan=4)
button_clear = tk.Button(root, text='C', width=5, font=font_16, relief=tk.FLAT, bg='#b1b2b2')
button_back = tk.Button(root, text='←', width=5, font=font_16, relief=tk.FLAT, bg='#b1b2b2')
button_division = tk.Button(root, text='÷', width=5, font=font_16, relief=tk.FLAT, bg='#b1b2b2')
button_multiplication = tk.Button(root, text='×', width=5, font=font_16, relief=tk.FLAT, bg='#b1b2b2')
button_clear.grid(row=2, column=1, padx=4, pady=2)
button_back.grid(row=2, column=2, padx=4, pady=2)
button_division.grid(row=2, column=3, padx=4, pady=2)
button_multiplication.grid(row=2, column=4, padx=4, pady=2)
button_seven = tk.Button(root, text='7', width=5, font=font_16, relief=tk.FLAT, bg='#eacda1')
button_eight = tk.Button(root, text='8', width=5, font=font_16, relief=tk.FLAT, bg='#eacda1')
button_nine = tk.Button(root, text='9', width=5, font=font_16, relief=tk.FLAT, bg='#eacda1')
button_subtraction = tk.Button(root, text='-', width=5, font=font_16, relief=tk.FLAT, bg='#b1b2b2')
button_seven.grid(row=3, column=1, padx=4, pady=2)
button_eight.grid(row=3, column=2, padx=4, pady=2)
button_nine.grid(row=3, column=3, padx=4, pady=2)
button_subtraction.grid(row=3, column=4, padx=4, pady=2)
button_four = tk.Button(root, text='4', width=5, font=font_16, relief=tk.FLAT, bg='#eacda1')
button_five = tk.Button(root, text='5', width=5, font=font_16, relief=tk.FLAT, bg='#eacda1')
button_six = tk.Button(root, text='6', width=5, font=font_16, relief=tk.FLAT, bg='#eacda1')
button_addition = tk.Button(root, text='+', width=5, font=font_16, relief=tk.FLAT, bg='#b1b2b2')
button_four.grid(row=4, column=1, padx=4, pady=2)
button_five.grid(row=4, column=2, padx=4, pady=2)
button_six.grid(row=4, column=3, padx=4, pady=2)
button_addition.grid(row=4, column=4, padx=4, pady=2)
button_one = tk.Button(root, text='1', width=5, font=font_16, relief=tk.FLAT, bg='#eacda1')
button_two = tk.Button(root, text='2', width=5, font=font_16, relief=tk.FLAT, bg='#eacda1')
button_three = tk.Button(root, text='3', width=5, font=font_16, relief=tk.FLAT, bg='#eacda1')
button_equal = tk.Button(root, text='=', width=5, font=font_16, relief=tk.FLAT, bg='#b1b2b2')
button_one.grid(row=5, column=1, padx=4, pady=2)
button_two.grid(row=5, column=2, padx=4, pady=2)
button_three.grid(row=5, column=3, padx=4, pady=2)
button_equal.grid(row=5, column=4, padx=4, pady=2)
button_zero1 = tk.Button(root, text=' ', width=5, font=font_16, relief=tk.FLAT, bg='#eacda1')
button_zero = tk.Button(root, text='0', width=5, font=font_16, relief=tk.FLAT, bg='#eacda1')
button_dot = tk.Button(root, text='.', width=5, font=font_16, relief=tk.FLAT, bg='#eacda1')
button_equal2 = tk.Button(root, text=' ', width=5, font=font_16, relief=tk.FLAT, bg='#b1b2b2')
button_zero1.grid(row=6, column=1, padx=4, pady=2)
button_zero.grid(row=6, column=2, padx=4, pady=2)
button_dot.grid(row=6, column=3, padx=4, pady=2)
button_equal2.grid(row=6, column=4, padx=4, pady=2)
def click_button(x):
print('X:\t', x)
result_num.set(result_num.get() + x)
def calculation():
opt_str = result_num.get()
result = eval(opt_str)
result_num.set(str(result))
def btnClearDisplay():
opt_str = result_num.get()
result = eval(str(opt_str))
result_num.set("")
button_one.config(command=lambda: click_button('1'))
button_two.config(command=lambda: click_button('2'))
button_three.config(command=lambda: click_button('3'))
button_four.config(command=lambda: click_button('4'))
button_five.config(command=lambda: click_button('5'))
button_six.config(command=lambda: click_button('6'))
button_seven.config(command=lambda: click_button('7'))
button_eight.config(command=lambda: click_button('8'))
button_nine.config(command=lambda: click_button('9'))
button_zero.config(command=lambda: click_button('0'))
button_dot.config(command=lambda: click_button('.'))
button_addition.config(command=lambda: click_button('+'))
button_subtraction.config(command=lambda: click_button('-'))
button_multiplication.config(command=lambda: click_button('*'))
button_division.config(command=lambda: click_button('/'))
button_clear.config(command=lambda: btnClearDisplay())
button_equal.config(command=calculation)
root.mainloop()運行展示
可以看到計算器的頁面特別好看，跟著我一起學python，成就感滿滿 ！！！
原文鏈接：https://blog.csdn.net/weixin_56043516/article/details/127958188
相關推薦
- 2023-02-27 Python?input()函數案例教程_python
- 2022-07-21 Centos7修改主機名hostname
- 2022-05-15 Python學習之異常處理詳解_python
- 2022-08-22 如何使用Python?Matplotlib繪制條形圖_python
- 2022-01-12 錯誤：UnmappedTerms cannot be cast to org.elasticsear
- 2022-11-23 .NET?SkiaSharp?生成二維碼驗證碼及指定區域截取方法實現_實用技巧
- 2022-12-11 Dos判斷文件夾是否存在，如果存在刪除，不存在創建_DOS/BAT
- 2022-09-15 c++中的字節序與符號位的問題_C 語言
- 最近更新
-
- window11 系統安裝 yarn
- 超詳細win安裝深度學習環境2025年最新版（
- Linux 中運行的top命令 怎么退出？
- MySQL 中decimal 的用法？ 存儲小
- get 、set 、toString 方法的使
- @Resource和 @Autowired注解
- Java基礎操作-- 運算符，流程控制 Flo
- 1. Int 和Integer 的區別，Jav
- spring @retryable不生效的一種
- Spring Security之認證信息的處理
- Spring Security之認證過濾器
- Spring Security概述快速入門
- Spring Security之配置體系
- 【SpringBoot】SpringCache
- Spring Security之基于方法配置權
- redisson分布式鎖中waittime的設
- maven:解決release錯誤：Artif
- restTemplate使用總結
- Spring Security之安全異常處理
- MybatisPlus優雅實現加密？
- Spring ioc容器與Bean的生命周期。
- 【探索SpringCloud】服務發現-Nac
- Spring Security之基于HttpR
- Redis 底層數據結構-簡單動態字符串（SD
- arthas操作spring被代理目標對象命令
- Spring中的單例模式應用詳解
- 聊聊消息隊列，發送消息的4種方式
- bootspring第三方資源配置管理
- GIT同步修改后的遠程分支
提供CDN加速