Python：使用Tkinter的重量转换GUI

Z时代
2024-01-10
分类：IT

先决条件： Python GUI – Tkinter

Python提供了多种开发GUI(图形用户界面)的选项。在所有的GUI方法中, Tkinter是最常用的方法。它是Python随附的Tk GUI工具包的标准Python接口。带有tkinter的Python输出了创建GUI应用程序的最快, 最简单的方法。使用tkinter创建GUI很容易。

创建Tkinter的步骤：

导入模块–Tkinter

创建主窗口(容器)

将任意数量的小部件添加到主窗口

将事件触发器应用于小部件。

让我们创建一个基于GUI的重量转换器, 该转换器接受一个公斤输入值, 并在用户单击”转换”按钮时将该值转换为克, 磅和盎司。

下面是实现。

# Python program to  create a simple GUI  
# weight converter using Tkinter 
from tkinter import *
# Create a GUI window
window = Tk()
# Function to convert weight
# given in kg to grams, pounds
# and ounces
def from_kg():
     # convert kg to gram
     gram = float (e2_value.get()) * 1000
     # convert kg to pound
     pound = float (e2_value.get()) * 2.20462 
     # convert kg to ounce
     ounce = float (e2_value.get()) * 35.274 
     # Enters the converted weight to 
     # the text widget
     t1.delete( "1.0" , END)
     t1.insert(END, gram)
     t2.delete( "1.0" , END)
     t2.insert(END, pound)
     t3.delete( "1.0" , END)
     t3.insert(END, ounce)
# Create the Label widgets
e1 = Label(window, text = "Enter the weight in Kg" )
e2_value = StringVar()
e2 = Entry(window, textvariable = e2_value)
e3 = Label(window, text = 'Gram' )
e4 = Label(window, text = 'Pounds' )
e5 = Label(window, text = 'Ounce' )
# Create the Text Widgets
t1 = Text(window, height = 1 , width = 20 )
t2 = Text(window, height = 1 , width = 20 )
t3 = Text(window, height = 1 , width = 20 )
# Create the Button Widget
b1 = Button(window, text = "Convert" , command = from_kg)
# grid method is used for placing 
# the widgets at respective positions 
# in table like structure
e1.grid(row = 0 , column = 0 )
e2.grid(row = 0 , column = 1 )
e3.grid(row = 1 , column = 0 )
e4.grid(row = 1 , column = 1 )
e5.grid(row = 1 , column = 2 )
t1.grid(row = 2 , column = 0 )
t2.grid(row = 2 , column = 1 )
t3.grid(row = 2 , column = 2 )
b1.grid(row = 0 , column = 2 )
# Start the GUI window.mainloop()